1629425393 has 4 divisors (see below), whose sum is σ = 1637956608. Its totient is φ = 1620894180.

The previous prime is 1629425383. The next prime is 1629425411. The reversal of 1629425393 is 3935249261.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3935249261 = 4273 ⋅920957.

It is a cyclic number.

It is not a de Polignac number, because 1629425393 - 2⁴ = 1629425377 is a prime.

It is a super-2 number, since 2×1629425393² = 5310054222706408898, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1629425353) 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, 4265321 + ... + 4265702.

It is an arithmetic number, because the mean of its divisors is an integer number (409489152).

Almost surely, 2^1629425393 is an apocalyptic number.

It is an amenable number.

1629425393 is a deficient number, since it is larger than the sum of its proper divisors (8531215).

1629425393 is an equidigital number, since it uses as much as digits as its factorization.

1629425393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8531214.

The product of its digits is 349920, while the sum is 44.

The square root of 1629425393 is about 40366.1416660052. The cubic root of 1629425393 is about 1176.7336154941.

The spelling of 1629425393 in words is "one billion, six hundred twenty-nine million, four hundred twenty-five thousand, three hundred ninety-three".