1218872888 has 8 divisors (see below), whose sum is σ = 2285386680. Its totient is φ = 609436440.

The previous prime is 1218872873. The next prime is 1218872923. The reversal of 1218872888 is 8882788121.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×1218872888² = 2971302234202921088, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 76179548 + ... + 76179563.

It is an arithmetic number, because the mean of its divisors is an integer number (285673335).

Almost surely, 2^1218872888 is an apocalyptic number.

It is an amenable number.

1218872888 is a deficient number, since it is larger than the sum of its proper divisors (1066513792).

1218872888 is a wasteful number, since it uses less digits than its factorization.

1218872888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152359117 (or 152359113 counting only the distinct ones).

The product of its digits is 917504, while the sum is 53.

The square root of 1218872888 is about 34912.3601035507. The cubic root of 1218872888 is about 1068.2005706524.

The spelling of 1218872888 in words is "one billion, two hundred eighteen million, eight hundred seventy-two thousand, eight hundred eighty-eight".