1612803947 has 2 divisors, whose sum is σ = 1612803948. Its totient is φ = 1612803946.

The previous prime is 1612803943. The next prime is 1612804021. The reversal of 1612803947 is 7493082161.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1612803947 - 2² = 1612803943 is a prime.

It is a super-2 number, since 2×1612803947² = 5202273142917557618, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1612803943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 806401973 + 806401974.

It is an arithmetic number, because the mean of its divisors is an integer number (806401974).

Almost surely, 2^1612803947 is an apocalyptic number.

1612803947 is a deficient number, since it is larger than the sum of its proper divisors (1).

1612803947 is an equidigital number, since it uses as much as digits as its factorization.

1612803947 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72576, while the sum is 41.

The square root of 1612803947 is about 40159.7304149318. The cubic root of 1612803947 is about 1172.7187237646.

The spelling of 1612803947 in words is "one billion, six hundred twelve million, eight hundred three thousand, nine hundred forty-seven".