1261477896 has 32 divisors (see below), whose sum is σ = 3604223040. Its totient is φ = 360422208.

The previous prime is 1261477883. The next prime is 1261477913. The reversal of 1261477896 is 6987741621.

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, 3754231 + ... + 3754566.

It is an arithmetic number, because the mean of its divisors is an integer number (112631970).

Almost surely, 2^1261477896 is an apocalyptic number.

It is an amenable number.

1261477896 is an abundant number, since it is smaller than the sum of its proper divisors (2342745144).

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

1261477896 is a wasteful number, since it uses less digits than its factorization.

1261477896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7508813 (or 7508809 counting only the distinct ones).

The product of its digits is 1016064, while the sum is 51.

The square root of 1261477896 is about 35517.2900993305. The cubic root of 1261477896 is about 1080.5044214343.

The spelling of 1261477896 in words is "one billion, two hundred sixty-one million, four hundred seventy-seven thousand, eight hundred ninety-six".