138794510 has 16 divisors (see below), whose sum is σ = 252043056. Its totient is φ = 55026048.

The previous prime is 138794507. The next prime is 138794567. The reversal of 138794510 is 15497831.

It is a super-2 number, since 2×138794510² = 38527832012280200, 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 in 7 ways as a sum of consecutive naturals, for example, 60284 + ... + 62543.

It is an arithmetic number, because the mean of its divisors is an integer number (15752691).

Almost surely, 2^138794510 is an apocalyptic number.

138794510 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

138794510 is a deficient number, since it is larger than the sum of its proper divisors (113248546).

138794510 is a wasteful number, since it uses less digits than its factorization.

138794510 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122947.

The product of its (nonzero) digits is 30240, while the sum is 38.

The square root of 138794510 is about 11781.1081821703. The cubic root of 138794510 is about 517.7547548848.

The spelling of 138794510 in words is "one hundred thirty-eight million, seven hundred ninety-four thousand, five hundred ten".