618696969390 has 40 divisors (see below), whose sum is σ = 1663607408760. Its totient is φ = 164985858288.

The previous prime is 618696969367. The next prime is 618696969413. The reversal of 618696969390 is 93969696816.

618696969390 is a `hidden beast` number, since 61 + 8 + 6 + 96 + 96 + 9 + 390 = 666.

It is an interprime number because it is at equal distance from previous prime (618696969367) and next prime (618696969413).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 381910900 + ... + 381912519.

It is an arithmetic number, because the mean of its divisors is an integer number (41590185219).

Almost surely, 2^618696969390 is an apocalyptic number.

618696969390 is an abundant number, since it is smaller than the sum of its proper divisors (1044910439370).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

618696969390 is a wasteful number, since it uses less digits than its factorization.

618696969390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 763823438 (or 763823429 counting only the distinct ones).

The product of its (nonzero) digits is 204073344, while the sum is 72.

The spelling of 618696969390 in words is "six hundred eighteen billion, six hundred ninety-six million, nine hundred sixty-nine thousand, three hundred ninety".