1618616136 has 16 divisors (see below), whose sum is σ = 4046540400. Its totient is φ = 539538704.

The previous prime is 1618616017. The next prime is 1618616159. The reversal of 1618616136 is 6316168161.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 1618616094 and 1618616103.

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, 33721146 + ... + 33721193.

It is an arithmetic number, because the mean of its divisors is an integer number (252908775).

Almost surely, 2^1618616136 is an apocalyptic number.

It is an amenable number.

1618616136 is an abundant number, since it is smaller than the sum of its proper divisors (2427924264).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1618616136 is a wasteful number, since it uses less digits than its factorization.

1618616136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67442348 (or 67442344 counting only the distinct ones).

The product of its digits is 31104, while the sum is 39.

The square root of 1618616136 is about 40232.0287333363. The cubic root of 1618616136 is about 1174.1257745867.

The spelling of 1618616136 in words is "one billion, six hundred eighteen million, six hundred sixteen thousand, one hundred thirty-six".