138251098 has 8 divisors (see below), whose sum is σ = 212434740. Its totient is φ = 67439520.

The previous prime is 138251081. The next prime is 138251107. The reversal of 138251098 is 890152831.

138251098 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 129800449 + 8450649 = 11393^2 + 2907^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×138251098² = 38226732196411208, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 842913 + ... + 843076.

Almost surely, 2^138251098 is an apocalyptic number.

138251098 is a deficient number, since it is larger than the sum of its proper divisors (74183642).

138251098 is a wasteful number, since it uses less digits than its factorization.

138251098 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1686032.

The product of its (nonzero) digits is 17280, while the sum is 37.

The square root of 138251098 is about 11758.0227079216. The cubic root of 138251098 is about 517.0781619944.

The spelling of 138251098 in words is "one hundred thirty-eight million, two hundred fifty-one thousand, ninety-eight".