1152642155 has 16 divisors (see below), whose sum is σ = 1631760384. Its totient is φ = 764886240.

The previous prime is 1152642137. The next prime is 1152642181. The reversal of 1152642155 is 5512462511.

It is not a de Polignac number, because 1152642155 - 2¹⁸ = 1152380011 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 530087 + ... + 532256.

It is an arithmetic number, because the mean of its divisors is an integer number (101985024).

Almost surely, 2^1152642155 is an apocalyptic number.

1152642155 is a deficient number, since it is larger than the sum of its proper divisors (479118229).

1152642155 is a wasteful number, since it uses less digits than its factorization.

1152642155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1062386.

The product of its digits is 12000, while the sum is 32.

The square root of 1152642155 is about 33950.5840155954. The cubic root of 1152642155 is about 1048.4913041633.

The spelling of 1152642155 in words is "one billion, one hundred fifty-two million, six hundred forty-two thousand, one hundred fifty-five".