1351235613 has 72 divisors (see below), whose sum is σ = 2294820000. Its totient is φ = 704785536.

The previous prime is 1351235603. The next prime is 1351235617. The reversal of 1351235613 is 3165321531.

It is not a de Polignac number, because 1351235613 - 2⁶ = 1351235549 is a prime.

It is a super-4 number, since 4×1351235613⁴ (a number of 38 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1351235617) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 2707638 + ... + 2708136.

It is an arithmetic number, because the mean of its divisors is an integer number (31872500).

Almost surely, 2^1351235613 is an apocalyptic number.

1351235613 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1351235613 is a deficient number, since it is larger than the sum of its proper divisors (943584387).

1351235613 is a wasteful number, since it uses less digits than its factorization.

1351235613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 651 (or 631 counting only the distinct ones).

The product of its digits is 8100, while the sum is 30.

The square root of 1351235613 is about 36759.1568592099. The cubic root of 1351235613 is about 1105.5465347135.

The spelling of 1351235613 in words is "one billion, three hundred fifty-one million, two hundred thirty-five thousand, six hundred thirteen".