1612661536 has 12 divisors (see below), whose sum is σ = 3174927462. Its totient is φ = 806330752.

The previous prime is 1612661471. The next prime is 1612661543. The reversal of 1612661536 is 6351662161.

It can be written as a sum of positive squares in only one way, i.e., 1410453136 + 202208400 = 37556^2 + 14220^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1612661495 and 1612661504.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25197805 + ... + 25197868.

Almost surely, 2^1612661536 is an apocalyptic number.

1612661536 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1612661536 is a deficient number, since it is larger than the sum of its proper divisors (1562265926).

1612661536 is an equidigital number, since it uses as much as digits as its factorization.

1612661536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50395683 (or 50395675 counting only the distinct ones).

The product of its digits is 38880, while the sum is 37.

The square root of 1612661536 is about 40157.9573185689. The cubic root of 1612661536 is about 1172.6842056277.

The spelling of 1612661536 in words is "one billion, six hundred twelve million, six hundred sixty-one thousand, five hundred thirty-six".