1612905955 has 4 divisors (see below), whose sum is σ = 1935487152. Its totient is φ = 1290324760.

The previous prime is 1612905947. The next prime is 1612905979. The reversal of 1612905955 is 5595092161.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5595092161 = 317 ⋅17650133.

It is not a de Polignac number, because 1612905955 - 2³ = 1612905947 is a prime.

It is a Duffinian 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, 161290591 + ... + 161290600.

It is an arithmetic number, because the mean of its divisors is an integer number (483871788).

Almost surely, 2^1612905955 is an apocalyptic number.

1612905955 is a deficient number, since it is larger than the sum of its proper divisors (322581197).

1612905955 is an equidigital number, since it uses as much as digits as its factorization.

1612905955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 322581196.

The product of its (nonzero) digits is 121500, while the sum is 43.

The square root of 1612905955 is about 40161.0004232962. Note that the first 3 decimals coincide. The cubic root of 1612905955 is about 1172.7434476148.

It can be divided in two parts, 161 and 2905955, that multiplied together give a triangular number (467858755 = T₃₀₅₈₉).

The spelling of 1612905955 in words is "one billion, six hundred twelve million, nine hundred five thousand, nine hundred fifty-five".