1151547640 has 32 divisors (see below), whose sum is σ = 2610772560. Its totient is φ = 457100800.

The previous prime is 1151547637. The next prime is 1151547641. The reversal of 1151547640 is 467451511.

It is a junction number, because it is equal to n+sod(n) for n = 1151547596 and 1151547605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1151547641) 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, 104641 + ... + 115120.

Almost surely, 2^1151547640 is an apocalyptic number.

1151547640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1151547640 is an abundant number, since it is smaller than the sum of its proper divisors (1459224920).

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

1151547640 is a wasteful number, since it uses less digits than its factorization.

1151547640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219903 (or 219899 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 34.

The square root of 1151547640 is about 33934.4609504851. The cubic root of 1151547640 is about 1048.1593269214.

The spelling of 1151547640 in words is "one billion, one hundred fifty-one million, five hundred forty-seven thousand, six hundred forty".