17942957650 has 24 divisors (see below), whose sum is σ = 33383415780. Its totient is φ = 7175136960.

The previous prime is 17942957647. The next prime is 17942957653. The reversal of 17942957650 is 5675924971.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (17942957647) and next prime (17942957653).

It can be written as a sum of positive squares in 6 ways, for example, as 3837681 + 17939119969 = 1959^2 + 133937^2 .

It is a junction number, because it is equal to n+sod(n) for n = 17942957591 and 17942957600.

It is not an unprimeable number, because it can be changed into a prime (17942957653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 132516 + ... + 231184.

Almost surely, 2^17942957650 is an apocalyptic number.

17942957650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

17942957650 is a deficient number, since it is larger than the sum of its proper divisors (15440458130).

17942957650 is a wasteful number, since it uses less digits than its factorization.

17942957650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102318 (or 102313 counting only the distinct ones).

The product of its (nonzero) digits is 4762800, while the sum is 55.

The spelling of 17942957650 in words is "seventeen billion, nine hundred forty-two million, nine hundred fifty-seven thousand, six hundred fifty".