139018995 has 12 divisors (see below), whose sum is σ = 240966336. Its totient is φ = 74143440.

The previous prime is 139018993. The next prime is 139019017. The reversal of 139018995 is 599810931.

It is not a de Polignac number, because 139018995 - 2¹ = 139018993 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 3089311 = 139018995 / (1 + 3 + 9 + 0 + 1 + 8 + 9 + 9 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 139018995.

It is not an unprimeable number, because it can be changed into a prime (139018993) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1544611 + ... + 1544700.

It is an arithmetic number, because the mean of its divisors is an integer number (20080528).

Almost surely, 2^139018995 is an apocalyptic number.

139018995 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

139018995 is a deficient number, since it is larger than the sum of its proper divisors (101947341).

139018995 is a wasteful number, since it uses less digits than its factorization.

139018995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3089322 (or 3089319 counting only the distinct ones).

The product of its (nonzero) digits is 87480, while the sum is 45.

The square root of 139018995 is about 11790.6316624683. The cubic root of 139018995 is about 518.0337418329.

The spelling of 139018995 in words is "one hundred thirty-nine million, eighteen thousand, nine hundred ninety-five".