1645379702 has 32 divisors (see below), whose sum is σ = 2558179584. Its totient is φ = 793346400.

The previous prime is 1645379693. The next prime is 1645379707. The reversal of 1645379702 is 2079735461.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1645379707) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1550252 + ... + 1551312.

It is an arithmetic number, because the mean of its divisors is an integer number (79943112).

Almost surely, 2^1645379702 is an apocalyptic number.

1645379702 is a deficient number, since it is larger than the sum of its proper divisors (912799882).

1645379702 is a wasteful number, since it uses less digits than its factorization.

1645379702 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1364.

The product of its (nonzero) digits is 317520, while the sum is 44.

The square root of 1645379702 is about 40563.2802174578. The cubic root of 1645379702 is about 1180.5617601956.

The spelling of 1645379702 in words is "one billion, six hundred forty-five million, three hundred seventy-nine thousand, seven hundred two".