613965418690 has 16 divisors (see below), whose sum is σ = 1190148350328. Its totient is φ = 226694923776.

The previous prime is 613965418681. The next prime is 613965418691. The reversal of 613965418690 is 96814569316.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 271139945521 + 342825473169 = 520711^2 + 585513^2 .

It is a super-2 number, since 2×613965418690² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (613965418691) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2361405327 + ... + 2361405586.

Almost surely, 2^613965418690 is an apocalyptic number.

613965418690 is a deficient number, since it is larger than the sum of its proper divisors (576182931638).

613965418690 is a wasteful number, since it uses less digits than its factorization.

613965418690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4722810933.

The product of its (nonzero) digits is 8398080, while the sum is 58.

The spelling of 613965418690 in words is "six hundred thirteen billion, nine hundred sixty-five million, four hundred eighteen thousand, six hundred ninety".