1990076739 has 32 divisors (see below), whose sum is σ = 3257280000. Its totient is φ = 1077324192.

The previous prime is 1990076731. The next prime is 1990076741. The reversal of 1990076739 is 9376700991.

It is not a de Polignac number, because 1990076739 - 2³ = 1990076731 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1990076691 and 1990076700.

It is not an unprimeable number, because it can be changed into a prime (1990076731) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 31344 + ... + 70445.

It is an arithmetic number, because the mean of its divisors is an integer number (101790000).

Almost surely, 2^1990076739 is an apocalyptic number.

1990076739 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

1990076739 is a deficient number, since it is larger than the sum of its proper divisors (1267203261).

1990076739 is a wasteful number, since it uses less digits than its factorization.

1990076739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101832 (or 101818 counting only the distinct ones).

The product of its (nonzero) digits is 642978, while the sum is 51.

The square root of 1990076739 is about 44610.2761591990. The cubic root of 1990076739 is about 1257.8338398547.

The spelling of 1990076739 in words is "one billion, nine hundred ninety million, seventy-six thousand, seven hundred thirty-nine".