1990307053 has 8 divisors (see below), whose sum is σ = 2274983360. Its totient is φ = 1705717440.

The previous prime is 1990307029. The next prime is 1990307069. The reversal of 1990307053 is 3507030991.

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

It is not a de Polignac number, because 1990307053 - 2¹⁷ = 1990175981 is a prime.

It is a super-3 number, since 3×1990307053³ (a number of 29 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1990307083) 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, 38773 + ... + 74053.

It is an arithmetic number, because the mean of its divisors is an integer number (284372920).

Almost surely, 2^1990307053 is an apocalyptic number.

It is an amenable number.

1990307053 is a deficient number, since it is larger than the sum of its proper divisors (284676307).

1990307053 is an equidigital number, since it uses as much as digits as its factorization.

1990307053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43347.

The product of its (nonzero) digits is 25515, while the sum is 37.

The square root of 1990307053 is about 44612.8574852587. The cubic root of 1990307053 is about 1257.8823615293.

The spelling of 1990307053 in words is "one billion, nine hundred ninety million, three hundred seven thousand, fifty-three".