158638902394 has 16 divisors (see below), whose sum is σ = 274756039488. Its totient is φ = 67287192192.

The previous prime is 158638902343. The next prime is 158638902403. The reversal of 158638902394 is 493209836851.

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, 58407664 + ... + 58410379.

It is an arithmetic number, because the mean of its divisors is an integer number (17172252468).

Almost surely, 2^158638902394 is an apocalyptic number.

158638902394 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

158638902394 is a deficient number, since it is larger than the sum of its proper divisors (116117137094).

158638902394 is a wasteful number, since it uses less digits than its factorization.

158638902394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116818149.

The product of its (nonzero) digits is 11197440, while the sum is 58.

The spelling of 158638902394 in words is "one hundred fifty-eight billion, six hundred thirty-eight million, nine hundred two thousand, three hundred ninety-four".