1621252246 has 8 divisors (see below), whose sum is σ = 2449629720. Its totient is φ = 804709008.

The previous prime is 1621252231. The next prime is 1621252253. The reversal of 1621252246 is 6422521261.

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

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, 2958216 + ... + 2958763.

It is an arithmetic number, because the mean of its divisors is an integer number (306203715).

Almost surely, 2^1621252246 is an apocalyptic number.

1621252246 is a deficient number, since it is larger than the sum of its proper divisors (828377474).

1621252246 is a wasteful number, since it uses less digits than its factorization.

1621252246 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5917118.

The product of its digits is 11520, while the sum is 31.

The square root of 1621252246 is about 40264.7767409680. The cubic root of 1621252246 is about 1174.7628302964.

The spelling of 1621252246 in words is "one billion, six hundred twenty-one million, two hundred fifty-two thousand, two hundred forty-six".