1151915643 has 36 divisors (see below), whose sum is σ = 1716431808. Its totient is φ = 744215040.

The previous prime is 1151915627. The next prime is 1151915659. The reversal of 1151915643 is 3465191511.

1151915643 is a `hidden beast` number, since 1 + 1 + 5 + 1 + 9 + 1 + 5 + 643 = 666.

It is an interprime number because it is at equal distance from previous prime (1151915627) and next prime (1151915659).

It is not a de Polignac number, because 1151915643 - 2⁴ = 1151915627 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1151915598 and 1151915607.

It is not an unprimeable number, because it can be changed into a prime (1151915663) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 5165430 + ... + 5165652.

Almost surely, 2^1151915643 is an apocalyptic number.

1151915643 is a deficient number, since it is larger than the sum of its proper divisors (564516165).

1151915643 is an equidigital number, since it uses as much as digits as its factorization.

1151915643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 484 (or 384 counting only the distinct ones).

The product of its digits is 16200, while the sum is 36.

The square root of 1151915643 is about 33939.8827782301. The cubic root of 1151915643 is about 1048.2709693412.

The spelling of 1151915643 in words is "one billion, one hundred fifty-one million, nine hundred fifteen thousand, six hundred forty-three".