70188139 has 6 divisors (see below), whose sum is σ = 81647484. Its totient is φ = 60161220.

The previous prime is 70188119. The next prime is 70188143. The reversal of 70188139 is 93188107.

It is not a de Polignac number, because 70188139 - 2¹¹ = 70186091 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 70188098 and 70188107.

It is not an unprimeable number, because it can be changed into a prime (70188119) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 716157 + ... + 716254.

It is an arithmetic number, because the mean of its divisors is an integer number (13607914).

Almost surely, 2^70188139 is an apocalyptic number.

70188139 is a deficient number, since it is larger than the sum of its proper divisors (11459345).

70188139 is a wasteful number, since it uses less digits than its factorization.

70188139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1432425 (or 1432418 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 37.

The square root of 70188139 is about 8377.8361764838. The cubic root of 70188139 is about 412.4974256344.

The spelling of 70188139 in words is "seventy million, one hundred eighty-eight thousand, one hundred thirty-nine".