1538916654 has 64 divisors (see below), whose sum is σ = 3458391552. Its totient is φ = 452419200.

The previous prime is 1538916649. The next prime is 1538916661. The reversal of 1538916654 is 4566198351.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1125079 + ... + 1126445.

It is an arithmetic number, because the mean of its divisors is an integer number (54037368).

Almost surely, 2^1538916654 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1538916654, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1729195776).

1538916654 is an abundant number, since it is smaller than the sum of its proper divisors (1919474898).

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

1538916654 is a wasteful number, since it uses less digits than its factorization.

1538916654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1881.

The product of its digits is 777600, while the sum is 48.

The square root of 1538916654 is about 39229.0282061639. The cubic root of 1538916654 is about 1154.5294970851.

The spelling of 1538916654 in words is "one billion, five hundred thirty-eight million, nine hundred sixteen thousand, six hundred fifty-four".