1645940896372 has 12 divisors (see below), whose sum is σ = 2886898595616. Its totient is φ = 821112726200.

The previous prime is 1645940896363. The next prime is 1645940896373. The reversal of 1645940896372 is 2736980495461.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1645940896373) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 464428504 + ... + 464432047.

It is an arithmetic number, because the mean of its divisors is an integer number (240574882968).

It is a 1-persistent number, because it is pandigital, but 2⋅1645940896372 = 3291881792744 is not.

Almost surely, 2^{1645940896372} is an apocalyptic number.

It is an amenable number.

1645940896372 is a deficient number, since it is larger than the sum of its proper divisors (1240957699244).

1645940896372 is a wasteful number, since it uses less digits than its factorization.

1645940896372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 928860998 (or 928860996 counting only the distinct ones).

The product of its (nonzero) digits is 78382080, while the sum is 64.

The spelling of 1645940896372 in words is "one trillion, six hundred forty-five billion, nine hundred forty million, eight hundred ninety-six thousand, three hundred seventy-two".