1213496770 has 24 divisors (see below), whose sum is σ = 2244568572. Its totient is φ = 472019040.

The previous prime is 1213496747. The next prime is 1213496777. The reversal of 1213496770 is 776943121.

It can be written as a sum of positive squares in 2 ways, for example, as 1183979281 + 29517489 = 34409^2 + 5433^2 .

It is not an unprimeable number, because it can be changed into a prime (1213496777) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 669165 + ... + 670975.

Almost surely, 2^1213496770 is an apocalyptic number.

1213496770 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1213496770 is a deficient number, since it is larger than the sum of its proper divisors (1031071802).

1213496770 is an frugal number, since it uses more digits than its factorization.

1213496770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3666 (or 1855 counting only the distinct ones).

The product of its (nonzero) digits is 63504, while the sum is 40.

The square root of 1213496770 is about 34835.2805356868. The cubic root of 1213496770 is about 1066.6277415266.

The spelling of 1213496770 in words is "one billion, two hundred thirteen million, four hundred ninety-six thousand, seven hundred seventy".