1623381351 has 8 divisors (see below), whose sum is σ = 2174215680. Its totient is φ = 1077400632.

The previous prime is 1623381307. The next prime is 1623381379. The reversal of 1623381351 is 1531833261.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1623381351 - 2¹⁰ = 1623380327 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1623381751) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1212621 + ... + 1213958.

It is an arithmetic number, because the mean of its divisors is an integer number (271776960).

Almost surely, 2^1623381351 is an apocalyptic number.

1623381351 is a deficient number, since it is larger than the sum of its proper divisors (550834329).

1623381351 is a wasteful number, since it uses less digits than its factorization.

1623381351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2426805.

The product of its digits is 12960, while the sum is 33.

The square root of 1623381351 is about 40291.2068694895. The cubic root of 1623381351 is about 1175.2768566866.

The spelling of 1623381351 in words is "one billion, six hundred twenty-three million, three hundred eighty-one thousand, three hundred fifty-one".