1990308202 has 8 divisors (see below), whose sum is σ = 2987056800. Its totient is φ = 994622604.

The previous prime is 1990308143. The next prime is 1990308209. The reversal of 1990308202 is 2028030991.

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

It is a super-2 number, since 2×1990308202² = 7922653477896945608, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1990308209) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 261052 + ... + 268567.

It is an arithmetic number, because the mean of its divisors is an integer number (373382100).

Almost surely, 2^1990308202 is an apocalyptic number.

1990308202 is a deficient number, since it is larger than the sum of its proper divisors (996748598).

1990308202 is a wasteful number, since it uses less digits than its factorization.

1990308202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 531500.

The product of its (nonzero) digits is 7776, while the sum is 34.

The square root of 1990308202 is about 44612.8703627104. The cubic root of 1990308202 is about 1257.8826035869.

The spelling of 1990308202 in words is "one billion, nine hundred ninety million, three hundred eight thousand, two hundred two".