1618565242 has 16 divisors (see below), whose sum is σ = 2864189952. Its totient is φ = 671294160.

The previous prime is 1618565237. The next prime is 1618565243. The reversal of 1618565242 is 2425658161.

It is a super-2 number, since 2×1618565242² = 5239506885221037128, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1618565195 and 1618565204.

It is not an unprimeable number, because it can be changed into a prime (1618565243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1864273 + ... + 1865140.

It is an arithmetic number, because the mean of its divisors is an integer number (179011872).

Almost surely, 2^1618565242 is an apocalyptic number.

1618565242 is a deficient number, since it is larger than the sum of its proper divisors (1245624710).

1618565242 is a wasteful number, since it uses less digits than its factorization.

1618565242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3729453.

The product of its digits is 115200, while the sum is 40.

The square root of 1618565242 is about 40231.3962223535. The cubic root of 1618565242 is about 1174.1134684810.

The spelling of 1618565242 in words is "one billion, six hundred eighteen million, five hundred sixty-five thousand, two hundred forty-two".