1210789664 has 48 divisors (see below), whose sum is σ = 2775705408. Its totient is φ = 509114112.

The previous prime is 1210789633. The next prime is 1210789693. The reversal of 1210789664 is 4669870121.

It is a super-2 number, since 2×1210789664² = 2932023220898465792, which contains 22 as substring.

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, 39122 + ... + 62865.

It is an arithmetic number, because the mean of its divisors is an integer number (57827196).

Almost surely, 2^1210789664 is an apocalyptic number.

1210789664 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1210789664 is an abundant number, since it is smaller than the sum of its proper divisors (1564915744).

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

1210789664 is a wasteful number, since it uses less digits than its factorization.

1210789664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102057 (or 102049 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 44.

The square root of 1210789664 is about 34796.4030324975. The cubic root of 1210789664 is about 1065.8339956480.

The spelling of 1210789664 in words is "one billion, two hundred ten million, seven hundred eighty-nine thousand, six hundred sixty-four".