1219713630 has 16 divisors (see below), whose sum is σ = 2927312784. Its totient is φ = 325256960.

The previous prime is 1219713623. The next prime is 1219713641. The reversal of 1219713630 is 363179121.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1219713591 and 1219713600.

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, 20328531 + ... + 20328590.

It is an arithmetic number, because the mean of its divisors is an integer number (182957049).

Almost surely, 2^1219713630 is an apocalyptic number.

1219713630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1219713630 is an abundant number, since it is smaller than the sum of its proper divisors (1707599154).

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

1219713630 is a wasteful number, since it uses less digits than its factorization.

1219713630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40657131.

The product of its (nonzero) digits is 6804, while the sum is 33.

The square root of 1219713630 is about 34924.3987779317. The cubic root of 1219713630 is about 1068.4461184538.

The spelling of 1219713630 in words is "one billion, two hundred nineteen million, seven hundred thirteen thousand, six hundred thirty".