1213219670 has 16 divisors (see below), whose sum is σ = 2351779920. Its totient is φ = 447957984.

The previous prime is 1213219639. The next prime is 1213219691. The reversal of 1213219670 is 769123121.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4666100 + ... + 4666359.

It is an arithmetic number, because the mean of its divisors is an integer number (146986245).

Almost surely, 2^1213219670 is an apocalyptic number.

1213219670 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1213219670 is a deficient number, since it is larger than the sum of its proper divisors (1138560250).

1213219670 is a wasteful number, since it uses less digits than its factorization.

1213219670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9332479.

The product of its (nonzero) digits is 4536, while the sum is 32.

The square root of 1213219670 is about 34831.3030189799. The cubic root of 1213219670 is about 1066.5465477802.

The spelling of 1213219670 in words is "one billion, two hundred thirteen million, two hundred nineteen thousand, six hundred seventy".