1213699630 has 128 divisors (see below), whose sum is σ = 2666151936. Its totient is φ = 391910400.

The previous prime is 1213699603. The next prime is 1213699657. The reversal of 1213699630 is 369963121.

It is an interprime number because it is at equal distance from previous prime (1213699603) and next prime (1213699657).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 7445929 + ... + 7446091.

It is an arithmetic number, because the mean of its divisors is an integer number (20829312).

Almost surely, 2^1213699630 is an apocalyptic number.

1213699630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1213699630 is an abundant number, since it is smaller than the sum of its proper divisors (1452452306).

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

1213699630 is a wasteful number, since it uses less digits than its factorization.

1213699630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 362.

The product of its (nonzero) digits is 52488, while the sum is 40.

The square root of 1213699630 is about 34838.1921172727. The cubic root of 1213699630 is about 1066.6871741934.

The spelling of 1213699630 in words is "one billion, two hundred thirteen million, six hundred ninety-nine thousand, six hundred thirty".