1628613723 has 16 divisors (see below), whose sum is σ = 2391037056. Its totient is φ = 977811840.

The previous prime is 1628613713. The next prime is 1628613761. The reversal of 1628613723 is 3273168261.

It is not a de Polignac number, because 1628613723 - 2⁶ = 1628613659 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1628613713) 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, 227086 + ... + 234147.

It is an arithmetic number, because the mean of its divisors is an integer number (149439816).

Almost surely, 2^1628613723 is an apocalyptic number.

1628613723 is a deficient number, since it is larger than the sum of its proper divisors (762423333).

1628613723 is a wasteful number, since it uses less digits than its factorization.

1628613723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 461354.

The product of its digits is 72576, while the sum is 39.

The square root of 1628613723 is about 40356.0865669604. The cubic root of 1628613723 is about 1176.5381932278.

The spelling of 1628613723 in words is "one billion, six hundred twenty-eight million, six hundred thirteen thousand, seven hundred twenty-three".