1234991616 has 40 divisors (see below), whose sum is σ = 3290098944. Its totient is φ = 411663360.

The previous prime is 1234991603. The next prime is 1234991633. The reversal of 1234991616 is 6161994321.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 400480 + ... + 403551.

Almost surely, 2^1234991616 is an apocalyptic number.

1234991616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1234991616 is an abundant number, since it is smaller than the sum of its proper divisors (2055107328).

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

1234991616 is an frugal number, since it uses more digits than its factorization.

1234991616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 804052 (or 804036 counting only the distinct ones).

The product of its digits is 69984, while the sum is 42.

The square root of 1234991616 is about 35142.4474958703. The cubic root of 1234991616 is about 1072.8886964899. Note that the first 3 decimals are identical.

The spelling of 1234991616 in words is "one billion, two hundred thirty-four million, nine hundred ninety-one thousand, six hundred sixteen".