1990000062 has 20 divisors (see below), whose sum is σ = 4459074576. Its totient is φ = 663333300.

The previous prime is 1990000057. The next prime is 1990000079. The reversal of 1990000062 is 2600000991.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 1989999990 and 1990000035.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 6141814 + ... + 6142137.

Almost surely, 2^1990000062 is an apocalyptic number.

1990000062 is an abundant number, since it is smaller than the sum of its proper divisors (2469074514).

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

1990000062 is a wasteful number, since it uses less digits than its factorization.

1990000062 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12283965 (or 12283956 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 27.

The square root of 1990000062 is about 44609.4167413115. The cubic root of 1990000062 is about 1257.8176850063.

The spelling of 1990000062 in words is "one billion, nine hundred ninety million, sixty-two", and thus it is an aban number.