1153645554 has 16 divisors (see below), whose sum is σ = 2314265760. Its totient is φ = 383386080.

The previous prime is 1153645543. The next prime is 1153645561. The reversal of 1153645554 is 4555463511.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 288459 + ... + 292430.

It is an arithmetic number, because the mean of its divisors is an integer number (144641610).

Almost surely, 2^1153645554 is an apocalyptic number.

1153645554 is an abundant number, since it is smaller than the sum of its proper divisors (1160620206).

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

1153645554 is a wasteful number, since it uses less digits than its factorization.

1153645554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 581225.

The product of its digits is 180000, while the sum is 39.

The square root of 1153645554 is about 33965.3581462054. The cubic root of 1153645554 is about 1048.7954604274.

The spelling of 1153645554 in words is "one billion, one hundred fifty-three million, six hundred forty-five thousand, five hundred fifty-four".