1498257139 has 2 divisors, whose sum is σ = 1498257140. Its totient is φ = 1498257138.

The previous prime is 1498257119. The next prime is 1498257157. The reversal of 1498257139 is 9317528941.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1498257139 - 2⁷ = 1498257011 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1498257092 and 1498257101.

It is not a weakly prime, because it can be changed into another prime (1498257119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 749128569 + 749128570.

It is an arithmetic number, because the mean of its divisors is an integer number (749128570).

Almost surely, 2^1498257139 is an apocalyptic number.

1498257139 is a deficient number, since it is larger than the sum of its proper divisors (1).

1498257139 is an equidigital number, since it uses as much as digits as its factorization.

1498257139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 544320, while the sum is 49.

The square root of 1498257139 is about 38707.3266837171. The cubic root of 1498257139 is about 1144.2707201073.

The spelling of 1498257139 in words is "one billion, four hundred ninety-eight million, two hundred fifty-seven thousand, one hundred thirty-nine".