1145863755 has 12 divisors (see below), whose sum is σ = 1986163920. Its totient is φ = 611127312.

The previous prime is 1145863727. The next prime is 1145863783. The reversal of 1145863755 is 5573685411.

1145863755 is a `hidden beast` number, since 1 + 1 + 4 + 5 + 8 + 637 + 5 + 5 = 666.

It is an interprime number because it is at equal distance from previous prime (1145863727) and next prime (1145863783).

It is not a de Polignac number, because 1145863755 - 2⁷ = 1145863627 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 25463639 = 1145863755 / (1 + 1 + 4 + 5 + 8 + 6 + 3 + 7 + 5 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 1145863755.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12731775 + ... + 12731864.

It is an arithmetic number, because the mean of its divisors is an integer number (165513660).

Almost surely, 2^1145863755 is an apocalyptic number.

1145863755 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1145863755 is a deficient number, since it is larger than the sum of its proper divisors (840300165).

1145863755 is a wasteful number, since it uses less digits than its factorization.

1145863755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25463650 (or 25463647 counting only the distinct ones).

The product of its digits is 504000, while the sum is 45.

The square root of 1145863755 is about 33850.6093741309. The cubic root of 1145863755 is about 1046.4319570654.

It can be divided in two parts, 114586 and 3755, that added together give a triangular number (118341 = T₄₈₆).

The spelling of 1145863755 in words is "one billion, one hundred forty-five million, eight hundred sixty-three thousand, seven hundred fifty-five".