1618036772331 has 48 divisors (see below), whose sum is σ = 2534740525824. Its totient is φ = 915338563776.

The previous prime is 1618036772323. The next prime is 1618036772459. The reversal of 1618036772331 is 1332776308161.

It is not a de Polignac number, because 1618036772331 - 2³ = 1618036772323 is a prime.

It is a super-2 number, since 2×1618036772331² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1618036772531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 56507040 + ... + 56535666.

It is an arithmetic number, because the mean of its divisors is an integer number (52807094288).

Almost surely, 2^{1618036772331} is an apocalyptic number.

1618036772331 is a deficient number, since it is larger than the sum of its proper divisors (916703753493).

1618036772331 is a wasteful number, since it uses less digits than its factorization.

1618036772331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32480 (or 32473 counting only the distinct ones).

The product of its (nonzero) digits is 762048, while the sum is 48.

The spelling of 1618036772331 in words is "one trillion, six hundred eighteen billion, thirty-six million, seven hundred seventy-two thousand, three hundred thirty-one".