1618732890446 has 32 divisors (see below), whose sum is σ = 2783403786240. Its totient is φ = 691635200256.

The previous prime is 1618732890427. The next prime is 1618732890503. The reversal of 1618732890446 is 6440982378161.

It is a super-2 number, since 2×1618732890446² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26057795 + ... + 26119841.

It is an arithmetic number, because the mean of its divisors is an integer number (86981368320).

Almost surely, 2^{1618732890446} is an apocalyptic number.

1618732890446 is a deficient number, since it is larger than the sum of its proper divisors (1164670895794).

1618732890446 is a wasteful number, since it uses less digits than its factorization.

1618732890446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67688.

The product of its (nonzero) digits is 13934592, while the sum is 59.

The spelling of 1618732890446 in words is "one trillion, six hundred eighteen billion, seven hundred thirty-two million, eight hundred ninety thousand, four hundred forty-six".