1155434864 has 10 divisors (see below), whose sum is σ = 2238655080. Its totient is φ = 577717424.

The previous prime is 1155434857. The next prime is 1155434867. The reversal of 1155434864 is 4684345511.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1155434867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36107324 + ... + 36107355.

It is an arithmetic number, because the mean of its divisors is an integer number (223865508).

Almost surely, 2^1155434864 is an apocalyptic number.

It is an amenable number.

1155434864 is a deficient number, since it is larger than the sum of its proper divisors (1083220216).

1155434864 is an equidigital number, since it uses as much as digits as its factorization.

1155434864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72214687 (or 72214681 counting only the distinct ones).

The product of its digits is 230400, while the sum is 41.

The square root of 1155434864 is about 33991.6881604901. The cubic root of 1155434864 is about 1049.3374093296.

The spelling of 1155434864 in words is "one billion, one hundred fifty-five million, four hundred thirty-four thousand, eight hundred sixty-four".