1145863730 has 32 divisors (see below), whose sum is σ = 2310880320. Its totient is φ = 405414720.

The previous prime is 1145863727. The next prime is 1145863783. The reversal of 1145863730 is 373685411.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 136700 + ... + 144839.

It is an arithmetic number, because the mean of its divisors is an integer number (72215010).

Almost surely, 2^1145863730 is an apocalyptic number.

1145863730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1145863730 is an abundant number, since it is smaller than the sum of its proper divisors (1165016590).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1145863730 is a wasteful number, since it uses less digits than its factorization.

1145863730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281594.

The product of its (nonzero) digits is 60480, while the sum is 38.

The square root of 1145863730 is about 33850.6090048613. The cubic root of 1145863730 is about 1046.4319494552.

The spelling of 1145863730 in words is "one billion, one hundred forty-five million, eight hundred sixty-three thousand, seven hundred thirty".