1213697490 has 32 divisors (see below), whose sum is σ = 3084220800. Its totient is φ = 304614144.

The previous prime is 1213697483. The next prime is 1213697519. The reversal of 1213697490 is 947963121.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1189390 + ... + 1190409.

It is an arithmetic number, because the mean of its divisors is an integer number (96381900).

Almost surely, 2^1213697490 is an apocalyptic number.

1213697490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1213697490 is an abundant number, since it is smaller than the sum of its proper divisors (1870523310).

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

1213697490 is a wasteful number, since it uses less digits than its factorization.

1213697490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2379826.

The product of its (nonzero) digits is 81648, while the sum is 42.

The square root of 1213697490 is about 34838.1614038399. The cubic root of 1213697490 is about 1066.6865472640.

The spelling of 1213697490 in words is "one billion, two hundred thirteen million, six hundred ninety-seven thousand, four hundred ninety".