1612688969 has 4 divisors (see below), whose sum is σ = 1707553044. Its totient is φ = 1517824896.

The previous prime is 1612688941. The next prime is 1612688971. The reversal of 1612688969 is 9698862161.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9698862161 = 91183 ⋅106367.

It can be written as a sum of positive squares in 2 ways, for example, as 614444944 + 998244025 = 24788^2 + 31595^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1612688969 is a prime.

It is a super-2 number, since 2×1612688969² = 5201531421468565922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1612688939) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47432012 + ... + 47432045.

It is an arithmetic number, because the mean of its divisors is an integer number (426888261).

Almost surely, 2^1612688969 is an apocalyptic number.

It is an amenable number.

1612688969 is a deficient number, since it is larger than the sum of its proper divisors (94864075).

1612688969 is an equidigital number, since it uses as much as digits as its factorization.

1612688969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94864074.

The product of its digits is 2239488, while the sum is 56.

The square root of 1612688969 is about 40158.2988808042. The cubic root of 1612688969 is about 1172.6908551039.

The spelling of 1612688969 in words is "one billion, six hundred twelve million, six hundred eighty-eight thousand, nine hundred sixty-nine".