1213808884 has 12 divisors (see below), whose sum is σ = 2124589824. Its totient is φ = 606783224.

The previous prime is 1213808867. The next prime is 1213809029. The reversal of 1213808884 is 4888083121.

It is a self number, because there is not a number n which added to its sum of digits gives 1213808884.

It is a congruent number.

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, 5524 + ... + 49579.

It is an arithmetic number, because the mean of its divisors is an integer number (177049152).

Almost surely, 2^1213808884 is an apocalyptic number.

It is an amenable number.

1213808884 is a deficient number, since it is larger than the sum of its proper divisors (910780940).

1213808884 is a wasteful number, since it uses less digits than its factorization.

1213808884 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60614 (or 60612 counting only the distinct ones).

The product of its (nonzero) digits is 98304, while the sum is 43.

The square root of 1213808884 is about 34839.7601025036. The cubic root of 1213808884 is about 1066.7191800101.

The spelling of 1213808884 in words is "one billion, two hundred thirteen million, eight hundred eight thousand, eight hundred eighty-four".