1618316139 has 16 divisors (see below), whose sum is σ = 2492380800. Its totient is φ = 923103360.

The previous prime is 1618316099. The next prime is 1618316143. The reversal of 1618316139 is 9316138161.

It is a happy number.

It is not a de Polignac number, because 1618316139 - 2¹² = 1618312043 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1618316097 and 1618316106.

It is not an unprimeable number, because it can be changed into a prime (1618316159) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1441789 + ... + 1442910.

It is an arithmetic number, because the mean of its divisors is an integer number (155773800).

Almost surely, 2^1618316139 is an apocalyptic number.

1618316139 is a deficient number, since it is larger than the sum of its proper divisors (874064661).

1618316139 is a wasteful number, since it uses less digits than its factorization.

1618316139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2884730.

The product of its digits is 23328, while the sum is 39.

The square root of 1618316139 is about 40228.3002250903. The cubic root of 1618316139 is about 1174.0532319651.

The spelling of 1618316139 in words is "one billion, six hundred eighteen million, three hundred sixteen thousand, one hundred thirty-nine".