138261016 has 8 divisors (see below), whose sum is σ = 259239420. Its totient is φ = 69130504.

The previous prime is 138260989. The next prime is 138261041. The reversal of 138261016 is 610162831.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×138261016² = 38232217090704512, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8641306 + ... + 8641321.

Almost surely, 2^138261016 is an apocalyptic number.

It is an amenable number.

138261016 is a deficient number, since it is larger than the sum of its proper divisors (120978404).

138261016 is a wasteful number, since it uses less digits than its factorization.

138261016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17282633 (or 17282629 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 138261016 is about 11758.4444549439. Note that the first 4 decimals coincide. The cubic root of 138261016 is about 517.0905265945.

The spelling of 138261016 in words is "one hundred thirty-eight million, two hundred sixty-one thousand, sixteen".