1157034640 has 40 divisors (see below), whose sum is σ = 2831693760. Its totient is φ = 438454656.

The previous prime is 1157034623. The next prime is 1157034647. The reversal of 1157034640 is 464307511.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (1157034647) 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, 379084 + ... + 382123.

It is an arithmetic number, because the mean of its divisors is an integer number (70792344).

Almost surely, 2^1157034640 is an apocalyptic number.

1157034640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1157034640 is an abundant number, since it is smaller than the sum of its proper divisors (1674659120).

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

1157034640 is a wasteful number, since it uses less digits than its factorization.

1157034640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 761239 (or 761233 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 1157034640 is about 34015.2118911525. The cubic root of 1157034640 is about 1049.8214783417.

The spelling of 1157034640 in words is "one billion, one hundred fifty-seven million, thirty-four thousand, six hundred forty".