1990301849452 has 48 divisors (see below), whose sum is σ = 4056568713792. Its totient is φ = 836715110400.

The previous prime is 1990301849387. The next prime is 1990301849479. The reversal of 1990301849452 is 2549481030991.

It is a happy number.

It is a super-2 number, since 2×1990301849452² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1990301849393 and 1990301849402.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6985008 + ... + 7264360.

It is an arithmetic number, because the mean of its divisors is an integer number (84511848204).

Almost surely, 2^{1990301849452} is an apocalyptic number.

It is an amenable number.

1990301849452 is an abundant number, since it is smaller than the sum of its proper divisors (2066266864340).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1990301849452 is a wasteful number, since it uses less digits than its factorization.

1990301849452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284218 (or 284216 counting only the distinct ones).

The product of its (nonzero) digits is 2799360, while the sum is 55.

The spelling of 1990301849452 in words is "one trillion, nine hundred ninety billion, three hundred one million, eight hundred forty-nine thousand, four hundred fifty-two".