1623272994 has 32 divisors (see below), whose sum is σ = 4122599040. Its totient is φ = 463792176.

The previous prime is 1623272993. The next prime is 1623273011. The reversal of 1623272994 is 4992723261.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1623272993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2146809 + ... + 2147564.

It is an arithmetic number, because the mean of its divisors is an integer number (128831220).

Almost surely, 2^1623272994 is an apocalyptic number.

1623272994 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1623272994 is an abundant number, since it is smaller than the sum of its proper divisors (2499326046).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1623272994 is a wasteful number, since it uses less digits than its factorization.

1623272994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4294391 (or 4294385 counting only the distinct ones).

The product of its digits is 326592, while the sum is 45.

The square root of 1623272994 is about 40289.8621740010. The cubic root of 1623272994 is about 1175.2507070889.

The spelling of 1623272994 in words is "one billion, six hundred twenty-three million, two hundred seventy-two thousand, nine hundred ninety-four".