138496810 has 8 divisors (see below), whose sum is σ = 249294276. Its totient is φ = 55398720.

The previous prime is 138496801. The next prime is 138496843. The reversal of 138496810 is 18694831.

It can be written as a sum of positive squares in 2 ways, for example, as 137569441 + 927369 = 11729^2 + 963^2 .

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

It is a super-2 number, since 2×138496810² = 38362732760352200, 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, 6924831 + ... + 6924850.

Almost surely, 2^138496810 is an apocalyptic number.

138496810 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

138496810 is a deficient number, since it is larger than the sum of its proper divisors (110797466).

138496810 is a wasteful number, since it uses less digits than its factorization.

138496810 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13849688.

The product of its (nonzero) digits is 41472, while the sum is 40.

The square root of 138496810 is about 11768.4667650463. The cubic root of 138496810 is about 517.3843129423.

The spelling of 138496810 in words is "one hundred thirty-eight million, four hundred ninety-six thousand, eight hundred ten".