1145761111 has 8 divisors (see below), whose sum is σ = 1250175744. Its totient is φ = 1041388920.

The previous prime is 1145761103. The next prime is 1145761139. The reversal of 1145761111 is 1111675411.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1145761111 - 2³ = 1145761103 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1145761111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1145761511) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78210 + ... + 91696.

It is an arithmetic number, because the mean of its divisors is an integer number (156271968).

Almost surely, 2^1145761111 is an apocalyptic number.

1145761111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1145761111 is a deficient number, since it is larger than the sum of its proper divisors (104414633).

1145761111 is a wasteful number, since it uses less digits than its factorization.

1145761111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21221.

The product of its digits is 840, while the sum is 28.

The square root of 1145761111 is about 33849.0932079428. The cubic root of 1145761111 is about 1046.4007104276.

The spelling of 1145761111 in words is "one billion, one hundred forty-five million, seven hundred sixty-one thousand, one hundred eleven".