1214661904 has 15 divisors (see below), whose sum is σ = 2353677573. Its totient is φ = 607261248.

The previous prime is 1214661881. The next prime is 1214661911. The reversal of 1214661904 is 4091664121.

It is a happy number.

The square root of 1214661904 is 34852.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 1179235600 + 35426304 = 34340^2 + 5952^2 .

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1214661904.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 135052 + ... + 143764.

Almost surely, 2^1214661904 is an apocalyptic number.

1214661904 is the 34852-nd square number.

It is an amenable number.

1214661904 is a deficient number, since it is larger than the sum of its proper divisors (1139015669).

1214661904 is an frugal number, since it uses more digits than its factorization.

1214661904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17434 (or 8715 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 34.

The cubic root of 1214661904 is about 1066.9690050950.

The spelling of 1214661904 in words is "one billion, two hundred fourteen million, six hundred sixty-one thousand, nine hundred four".