1621262343 has 8 divisors (see below), whose sum is σ = 2275456000. Its totient is φ = 1023955128.

The previous prime is 1621262311. The next prime is 1621262347. The reversal of 1621262343 is 3432621261.

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

It is not a de Polignac number, because 1621262343 - 2⁵ = 1621262311 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1621262343.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1621262347) 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, 14221543 + ... + 14221656.

It is an arithmetic number, because the mean of its divisors is an integer number (284432000).

Almost surely, 2^1621262343 is an apocalyptic number.

1621262343 is a deficient number, since it is larger than the sum of its proper divisors (654193657).

1621262343 is a wasteful number, since it uses less digits than its factorization.

1621262343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28443221.

The product of its digits is 10368, while the sum is 30.

The square root of 1621262343 is about 40264.9021233133. The cubic root of 1621262343 is about 1174.7652690606.

The spelling of 1621262343 in words is "one billion, six hundred twenty-one million, two hundred sixty-two thousand, three hundred forty-three".