1618942792 has 8 divisors (see below), whose sum is σ = 3035517750. Its totient is φ = 809471392.

The previous prime is 1618942789. The next prime is 1618942799. The reversal of 1618942792 is 2972498161.

It can be written as a sum of positive squares in only one way, i.e., 1312902756 + 306040036 = 36234^2 + 17494^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (1618942799) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101183917 + ... + 101183932.

Almost surely, 2^1618942792 is an apocalyptic number.

It is an amenable number.

1618942792 is a deficient number, since it is larger than the sum of its proper divisors (1416574958).

1618942792 is a wasteful number, since it uses less digits than its factorization.

1618942792 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202367855 (or 202367851 counting only the distinct ones).

The product of its digits is 435456, while the sum is 49.

The square root of 1618942792 is about 40236.0881796429. The cubic root of 1618942792 is about 1174.2047534589.

The spelling of 1618942792 in words is "one billion, six hundred eighteen million, nine hundred forty-two thousand, seven hundred ninety-two".