1339138951 has 2 divisors, whose sum is σ = 1339138952. Its totient is φ = 1339138950.

The previous prime is 1339138903. The next prime is 1339138963. The reversal of 1339138951 is 1598319331.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1339138951 - 2¹³ = 1339130759 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1339138898 and 1339138907.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1339138051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 669569475 + 669569476.

It is an arithmetic number, because the mean of its divisors is an integer number (669569476).

Almost surely, 2^1339138951 is an apocalyptic number.

1339138951 is a deficient number, since it is larger than the sum of its proper divisors (1).

1339138951 is an equidigital number, since it uses as much as digits as its factorization.

1339138951 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 87480, while the sum is 43.

The square root of 1339138951 is about 36594.2475124165. The cubic root of 1339138951 is about 1102.2375805693.

The spelling of 1339138951 in words is "one billion, three hundred thirty-nine million, one hundred thirty-eight thousand, nine hundred fifty-one".