1642700045 has 16 divisors (see below), whose sum is σ = 2270049408. Its totient is φ = 1117821120.

The previous prime is 1642699999. The next prime is 1642700131. The reversal of 1642700045 is 5400072461.

It is not a de Polignac number, because 1642700045 - 2²⁴ = 1625922829 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1642699990 and 1642700017.

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, 174554 + ... + 183723.

It is an arithmetic number, because the mean of its divisors is an integer number (141878088).

Almost surely, 2^1642700045 is an apocalyptic number.

It is an amenable number.

1642700045 is a deficient number, since it is larger than the sum of its proper divisors (627349363).

1642700045 is a wasteful number, since it uses less digits than its factorization.

1642700045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 358420.

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 1642700045 is about 40530.2361823861. The cubic root of 1642700045 is about 1179.9205263434.

The spelling of 1642700045 in words is "one billion, six hundred forty-two million, seven hundred thousand, forty-five".