1640492984730 has 32 divisors (see below), whose sum is σ = 3946151721600. Its totient is φ = 436468289472.

The previous prime is 1640492984653. The next prime is 1640492984731. The reversal of 1640492984730 is 374892940461.

It is not an unprimeable number, because it can be changed into a prime (1640492984731) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62268265 + ... + 62294604.

It is an arithmetic number, because the mean of its divisors is an integer number (123317241300).

Almost surely, 2^{1640492984730} is an apocalyptic number.

1640492984730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1640492984730 is an abundant number, since it is smaller than the sum of its proper divisors (2305658736870).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1640492984730 is a wasteful number, since it uses less digits than its factorization.

1640492984730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124563318.

The product of its (nonzero) digits is 10450944, while the sum is 57.

The spelling of 1640492984730 in words is "one trillion, six hundred forty billion, four hundred ninety-two million, nine hundred eighty-four thousand, seven hundred thirty".