103978138 has 8 divisors (see below), whose sum is σ = 170146080. Its totient is φ = 47262780.

The previous prime is 103978129. The next prime is 103978181. The reversal of 103978138 is 831879301.

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

It is a super-2 number, since 2×103978138² = 21622906363894088, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 103978138.

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, 2363118 + ... + 2363161.

It is an arithmetic number, because the mean of its divisors is an integer number (21268260).

Almost surely, 2^103978138 is an apocalyptic number.

103978138 is a deficient number, since it is larger than the sum of its proper divisors (66167942).

103978138 is a wasteful number, since it uses less digits than its factorization.

103978138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4726292.

The product of its (nonzero) digits is 36288, while the sum is 40.

The square root of 103978138 is about 10196.9670981130. The cubic root of 103978138 is about 470.2339833895.

The spelling of 103978138 in words is "one hundred three million, nine hundred seventy-eight thousand, one hundred thirty-eight".