1214537856 has 64 divisors (see below), whose sum is σ = 3686998080. Its totient is φ = 347010048.

The previous prime is 1214537843. The next prime is 1214537861. The reversal of 1214537856 is 6587354121.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (42).

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, 223231 + ... + 228606.

It is an arithmetic number, because the mean of its divisors is an integer number (57609345).

Almost surely, 2^1214537856 is an apocalyptic number.

1214537856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1214537856 is an abundant number, since it is smaller than the sum of its proper divisors (2472460224).

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

1214537856 is an equidigital number, since it uses as much as digits as its factorization.

1214537856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 451861 (or 451849 counting only the distinct ones).

The product of its digits is 201600, while the sum is 42.

The square root of 1214537856 is about 34850.2203149421. The cubic root of 1214537856 is about 1066.9326822641.

The spelling of 1214537856 in words is "one billion, two hundred fourteen million, five hundred thirty-seven thousand, eight hundred fifty-six".