1357019939 has 18 divisors (see below), whose sum is σ = 1537206996. Its totient is φ = 1188004720.

The previous prime is 1357019921. The next prime is 1357019971. The reversal of 1357019939 is 9399107531.

It is a de Polignac number, because none of the positive numbers 2^k-1357019939 is a prime.

It is a super-3 number, since 3×1357019939³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1357019893 and 1357019902.

It is not an unprimeable number, because it can be changed into a prime (1357019239) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 3542942 + ... + 3543324.

Almost surely, 2^1357019939 is an apocalyptic number.

1357019939 is a deficient number, since it is larger than the sum of its proper divisors (180187057).

1357019939 is an frugal number, since it uses more digits than its factorization.

1357019939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 835 (or 423 counting only the distinct ones).

The product of its (nonzero) digits is 229635, while the sum is 47.

The square root of 1357019939 is about 36837.7515464774. The cubic root of 1357019939 is about 1107.1218184017.

The spelling of 1357019939 in words is "one billion, three hundred fifty-seven million, nineteen thousand, nine hundred thirty-nine".