1438655154 has 16 divisors (see below), whose sum is σ = 2878204320. Its totient is φ = 479402720.

The previous prime is 1438655137. The next prime is 1438655189. The reversal of 1438655154 is 4515568341.

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, 15339 + ... + 55790.

It is an arithmetic number, because the mean of its divisors is an integer number (179887770).

Almost surely, 2^1438655154 is an apocalyptic number.

1438655154 is an abundant number, since it is smaller than the sum of its proper divisors (1439549166).

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

1438655154 is a wasteful number, since it uses less digits than its factorization.

1438655154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74505.

The product of its digits is 288000, while the sum is 42.

The square root of 1438655154 is about 37929.6078809154. The cubic root of 1438655154 is about 1128.8915839023.

The spelling of 1438655154 in words is "one billion, four hundred thirty-eight million, six hundred fifty-five thousand, one hundred fifty-four".