1618731730432 has 20 divisors (see below), whose sum is σ = 3234301876476. Its totient is φ = 809365864960.

The previous prime is 1618731730423. The next prime is 1618731730459. The reversal of 1618731730432 is 2340371378161.

It is a super-2 number, since 2×1618731730432² (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 as a sum of consecutive naturals, namely, 1580792194 + ... + 1580793217.

Almost surely, 2^{1618731730432} is an apocalyptic number.

It is an amenable number.

1618731730432 is a deficient number, since it is larger than the sum of its proper divisors (1615570146044).

1618731730432 is an frugal number, since it uses more digits than its factorization.

1618731730432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3161585429 (or 3161585413 counting only the distinct ones).

The product of its (nonzero) digits is 508032, while the sum is 46.

The spelling of 1618731730432 in words is "one trillion, six hundred eighteen billion, seven hundred thirty-one million, seven hundred thirty thousand, four hundred thirty-two".