1620711452 has 48 divisors (see below), whose sum is σ = 2967414912. Its totient is φ = 773935680.

The previous prime is 1620711437. The next prime is 1620711479. The reversal of 1620711452 is 2541170261.

It is a super-2 number, since 2×1620711452² = 5253411221287896608, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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, 1527002 + ... + 1528062.

It is an arithmetic number, because the mean of its divisors is an integer number (61821144).

Almost surely, 2^1620711452 is an apocalyptic number.

It is an amenable number.

1620711452 is a deficient number, since it is larger than the sum of its proper divisors (1346703460).

1620711452 is a wasteful number, since it uses less digits than its factorization.

1620711452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1298 (or 1296 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 29.

The square root of 1620711452 is about 40258.0607083848. The cubic root of 1620711452 is about 1174.6321956089.

The spelling of 1620711452 in words is "one billion, six hundred twenty million, seven hundred eleven thousand, four hundred fifty-two".