1351897839 has 6 divisors (see below), whose sum is σ = 1952741336. Its totient is φ = 901265220.

The previous prime is 1351897787. The next prime is 1351897847. The reversal of 1351897839 is 9387981531.

1351897839 is a `hidden beast` number, since 1 + 3 + 518 + 97 + 8 + 39 = 666.

It is not a de Polignac number, because 1351897839 - 2¹² = 1351893743 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1351897039) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 75105427 + ... + 75105444.

Almost surely, 2^1351897839 is an apocalyptic number.

1351897839 is a deficient number, since it is larger than the sum of its proper divisors (600843497).

1351897839 is a wasteful number, since it uses less digits than its factorization.

1351897839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150210877 (or 150210874 counting only the distinct ones).

The product of its digits is 1632960, while the sum is 54.

The square root of 1351897839 is about 36768.1633889973. The cubic root of 1351897839 is about 1105.7271106948.

The spelling of 1351897839 in words is "one billion, three hundred fifty-one million, eight hundred ninety-seven thousand, eight hundred thirty-nine".