1151995840 has 56 divisors (see below), whose sum is σ = 2887583760. Its totient is φ = 436543488.

The previous prime is 1151995807. The next prime is 1151995847. The reversal of 1151995840 is 485991511.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1151995847) 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, 88657 + ... + 100816.

Almost surely, 2^1151995840 is an apocalyptic number.

1151995840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1151995840 is an abundant number, since it is smaller than the sum of its proper divisors (1735587920).

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

1151995840 is a wasteful number, since it uses less digits than its factorization.

1151995840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189509 (or 189499 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 43.

The square root of 1151995840 is about 33941.0642143113. The cubic root of 1151995840 is about 1048.2952958436.

The spelling of 1151995840 in words is "one billion, one hundred fifty-one million, nine hundred ninety-five thousand, eight hundred forty".