2691209804 has 6 divisors (see below), whose sum is σ = 4709617164. Its totient is φ = 1345604900.

The previous prime is 2691209767. The next prime is 2691209849. The reversal of 2691209804 is 4089021962.

It is a super-2 number, since 2×2691209804² = 14485220418291436832, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 336401222 + ... + 336401229.

It is an arithmetic number, because the mean of its divisors is an integer number (784936194).

Almost surely, 2^2691209804 is an apocalyptic number.

It is an amenable number.

2691209804 is a deficient number, since it is larger than the sum of its proper divisors (2018407360).

2691209804 is a wasteful number, since it uses less digits than its factorization.

2691209804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 672802455 (or 672802453 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 41.

The square root of 2691209804 is about 51876.8715710576. The cubic root of 2691209804 is about 1390.9638784944.

The spelling of 2691209804 in words is "two billion, six hundred ninety-one million, two hundred nine thousand, eight hundred four".