1622648990 has 8 divisors (see below), whose sum is σ = 2920768200. Its totient is φ = 649059592.

The previous prime is 1622648971. The next prime is 1622649059. The reversal of 1622648990 is 998462261.

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81132440 + ... + 81132459.

It is an arithmetic number, because the mean of its divisors is an integer number (365096025).

Almost surely, 2^1622648990 is an apocalyptic number.

1622648990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1622648990 is a deficient number, since it is larger than the sum of its proper divisors (1298119210).

1622648990 is a wasteful number, since it uses less digits than its factorization.

1622648990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162264906.

The product of its (nonzero) digits is 373248, while the sum is 47.

The square root of 1622648990 is about 40282.1174964773. The cubic root of 1622648990 is about 1175.1000946871.

The spelling of 1622648990 in words is "one billion, six hundred twenty-two million, six hundred forty-eight thousand, nine hundred ninety".