19621040630 has 16 divisors (see below), whose sum is σ = 35354949984. Its totient is φ = 7840176960.

The previous prime is 19621040611. The next prime is 19621040683. The reversal of 19621040630 is 3604012691.

It is a super-2 number, since 2×19621040630² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1019906 + ... + 1038965.

It is an arithmetic number, because the mean of its divisors is an integer number (2209684374).

Almost surely, 2^19621040630 is an apocalyptic number.

19621040630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19621040630 is a deficient number, since it is larger than the sum of its proper divisors (15733909354).

19621040630 is a wasteful number, since it uses less digits than its factorization.

19621040630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2059831.

The product of its (nonzero) digits is 7776, while the sum is 32.

The spelling of 19621040630 in words is "nineteen billion, six hundred twenty-one million, forty thousand, six hundred thirty".