3138986497 has 2 divisors, whose sum is σ = 3138986498. Its totient is φ = 3138986496.

The previous prime is 3138986453. The next prime is 3138986519. The reversal of 3138986497 is 7946898313.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3131969296 + 7017201 = 55964^2 + 2649^2 .

It is a cyclic number.

It is not a de Polignac number, because 3138986497 - 2¹¹ = 3138984449 is a prime.

It is not a weakly prime, because it can be changed into another prime (3138986297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1569493248 + 1569493249.

It is an arithmetic number, because the mean of its divisors is an integer number (1569493249).

Almost surely, 2^3138986497 is an apocalyptic number.

It is an amenable number.

3138986497 is a deficient number, since it is larger than the sum of its proper divisors (1).

3138986497 is an equidigital number, since it uses as much as digits as its factorization.

3138986497 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7838208, while the sum is 58.

The square root of 3138986497 is about 56026.6588063218. The cubic root of 3138986497 is about 1464.1867839322.

The spelling of 3138986497 in words is "three billion, one hundred thirty-eight million, nine hundred eighty-six thousand, four hundred ninety-seven".