1234987964 has 30 divisors (see below), whose sum is σ = 2521303344. Its totient is φ = 529276440.

The previous prime is 1234987931. The next prime is 1234987981. The reversal of 1234987964 is 4697894321.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 54692 + ... + 73899.

Almost surely, 2^1234987964 is an apocalyptic number.

1234987964 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1234987964 is an abundant number, since it is smaller than the sum of its proper divisors (1286315380).

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

1234987964 is an equidigital number, since it uses as much as digits as its factorization.

1234987964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128623 (or 128600 counting only the distinct ones).

The product of its digits is 2612736, while the sum is 53.

The square root of 1234987964 is about 35142.3955358766. The cubic root of 1234987964 is about 1072.8876389406.

The spelling of 1234987964 in words is "one billion, two hundred thirty-four million, nine hundred eighty-seven thousand, nine hundred sixty-four".