3138986507 has 4 divisors (see below), whose sum is σ = 3139098576. Its totient is φ = 3138874440.

The previous prime is 3138986497. The next prime is 3138986519. The reversal of 3138986507 is 7056898313.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 3138986507 - 2¹⁰ = 3138985483 is a prime.

It is a super-2 number, since 2×3138986507² = 19706472582256122098, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3138982507) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26657 + ... + 83597.

It is an arithmetic number, because the mean of its divisors is an integer number (784774644).

Almost surely, 2^3138986507 is an apocalyptic number.

3138986507 is a deficient number, since it is larger than the sum of its proper divisors (112069).

3138986507 is an equidigital number, since it uses as much as digits as its factorization.

3138986507 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112068.

The product of its (nonzero) digits is 1088640, while the sum is 50.

The square root of 3138986507 is about 56026.6588955651. The cubic root of 3138986507 is about 1464.1867854871.

The spelling of 3138986507 in words is "three billion, one hundred thirty-eight million, nine hundred eighty-six thousand, five hundred seven".