1155975426 has 24 divisors (see below), whose sum is σ = 2506309104. Its totient is φ = 385064280.

The previous prime is 1155975419. The next prime is 1155975427. The reversal of 1155975426 is 6245795511.

It is a happy number.

1155975426 is a `hidden beast` number, since 1 + 1 + 5 + 597 + 54 + 2 + 6 = 666.

It is not an unprimeable number, because it can be changed into a prime (1155975427) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6585 + ... + 48531.

It is an arithmetic number, because the mean of its divisors is an integer number (104429546).

Almost surely, 2^1155975426 is an apocalyptic number.

1155975426 is an abundant number, since it is smaller than the sum of its proper divisors (1350333678).

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

1155975426 is a wasteful number, since it uses less digits than its factorization.

1155975426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43486 (or 43483 counting only the distinct ones).

The product of its digits is 378000, while the sum is 45.

The square root of 1155975426 is about 33999.6386157265. The cubic root of 1155975426 is about 1049.5010255030.

The spelling of 1155975426 in words is "one billion, one hundred fifty-five million, nine hundred seventy-five thousand, four hundred twenty-six".