1642723395 has 16 divisors (see below), whose sum is σ = 2639643552. Its totient is φ = 872357120.

The previous prime is 1642723339. The next prime is 1642723427. The reversal of 1642723395 is 5933272461.

1642723395 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1642723395 - 2¹¹ = 1642721347 is a prime.

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, 231516 + ... + 238505.

It is an arithmetic number, because the mean of its divisors is an integer number (164977722).

Almost surely, 2^1642723395 is an apocalyptic number.

1642723395 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1642723395 is a deficient number, since it is larger than the sum of its proper divisors (996920157).

1642723395 is a wasteful number, since it uses less digits than its factorization.

1642723395 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 470262.

The product of its digits is 272160, while the sum is 42.

The square root of 1642723395 is about 40530.5242379123. The cubic root of 1642723395 is about 1179.9261169388.

The spelling of 1642723395 in words is "one billion, six hundred forty-two million, seven hundred twenty-three thousand, three hundred ninety-five".