1620723052 has 24 divisors (see below), whose sum is σ = 3067243200. Its totient is φ = 744890496.

The previous prime is 1620723001. The next prime is 1620723103. The reversal of 1620723052 is 2503270261.

It is an interprime number because it is at equal distance from previous prime (1620723001) and next prime (1620723103).

It is a super-2 number, since 2×1620723052² = 5253486422568389408, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1620723052.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52777 + ... + 77632.

It is an arithmetic number, because the mean of its divisors is an integer number (127801800).

Almost surely, 2^1620723052 is an apocalyptic number.

It is an amenable number.

1620723052 is a deficient number, since it is larger than the sum of its proper divisors (1446520148).

1620723052 is a wasteful number, since it uses less digits than its factorization.

1620723052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130665 (or 130663 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 1620723052 is about 40258.2047786535. The cubic root of 1620723052 is about 1174.6349980203.

The spelling of 1620723052 in words is "one billion, six hundred twenty million, seven hundred twenty-three thousand, fifty-two".