1148859992 has 16 divisors (see below), whose sum is σ = 2461842960. Its totient is φ = 492368544.

The previous prime is 1148859961. The next prime is 1148859997. The reversal of 1148859992 is 2999588411.

It is a Harshad number since it is a multiple of its sum of digits (56), and also a Moran number because the ratio is a prime number: 20515357 = 1148859992 / (1 + 1 + 4 + 8 + 8 + 5 + 9 + 9 + 9 + 2).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1148859997) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10257623 + ... + 10257734.

It is an arithmetic number, because the mean of its divisors is an integer number (153865185).

Almost surely, 2^1148859992 is an apocalyptic number.

It is an amenable number.

1148859992 is an abundant number, since it is smaller than the sum of its proper divisors (1312982968).

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

1148859992 is a wasteful number, since it uses less digits than its factorization.

1148859992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20515370 (or 20515366 counting only the distinct ones).

The product of its digits is 1866240, while the sum is 56.

The square root of 1148859992 is about 33894.8372469909. The cubic root of 1148859992 is about 1047.3432432136.

The spelling of 1148859992 in words is "one billion, one hundred forty-eight million, eight hundred fifty-nine thousand, nine hundred ninety-two".