1155890896 has 20 divisors (see below), whose sum is σ = 2251148452. Its totient is φ = 574949376.

The previous prime is 1155890887. The next prime is 1155890909. The reversal of 1155890896 is 6980985511.

It can be written as a sum of positive squares in 2 ways, for example, as 197121600 + 958769296 = 14040^2 + 30964^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 184071 + ... + 190246.

Almost surely, 2^1155890896 is an apocalyptic number.

1155890896 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1155890896 is a deficient number, since it is larger than the sum of its proper divisors (1095257556).

1155890896 is a wasteful number, since it uses less digits than its factorization.

1155890896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 374518 (or 374512 counting only the distinct ones).

The product of its (nonzero) digits is 777600, while the sum is 52.

The square root of 1155890896 is about 33998.3954915522. The cubic root of 1155890896 is about 1049.4754435047.

The spelling of 1155890896 in words is "one billion, one hundred fifty-five million, eight hundred ninety thousand, eight hundred ninety-six".