1139887554 has 32 divisors (see below), whose sum is σ = 2488786944. Its totient is φ = 345928320.

The previous prime is 1139887523. The next prime is 1139887561. The reversal of 1139887554 is 4557889311.

It is a junction number, because it is equal to n+sod(n) for n = 1139887497 and 1139887506.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 94402 + ... + 105789.

It is an arithmetic number, because the mean of its divisors is an integer number (77774592).

Almost surely, 2^1139887554 is an apocalyptic number.

1139887554 is an abundant number, since it is smaller than the sum of its proper divisors (1348899390).

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

1139887554 is a wasteful number, since it uses less digits than its factorization.

1139887554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200282.

The product of its digits is 1209600, while the sum is 51.

The square root of 1139887554 is about 33762.2208096565. The cubic root of 1139887554 is about 1044.6095789003.

The spelling of 1139887554 in words is "one billion, one hundred thirty-nine million, eight hundred eighty-seven thousand, five hundred fifty-four".