1990849072 has 40 divisors (see below), whose sum is σ = 3997891440. Its totient is φ = 959266560.

The previous prime is 1990849067. The next prime is 1990849093. The reversal of 1990849072 is 2709480991.

It is a super-2 number, since 2×1990849072² = 7926960054966522368, which contains 22 as substring.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 257422 + ... + 265042.

It is an arithmetic number, because the mean of its divisors is an integer number (99947286).

Almost surely, 2^1990849072 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1990849072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1998945720).

1990849072 is an abundant number, since it is smaller than the sum of its proper divisors (2007042368).

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

1990849072 is a wasteful number, since it uses less digits than its factorization.

1990849072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8221 (or 8215 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 49.

The square root of 1990849072 is about 44618.9317666840. The cubic root of 1990849072 is about 1257.9965372553.

The spelling of 1990849072 in words is "one billion, nine hundred ninety million, eight hundred forty-nine thousand, seventy-two".