1947959990 has 32 divisors (see below), whose sum is σ = 3697816320. Its totient is φ = 736785504.

The previous prime is 1947959987. The next prime is 1947960013. The reversal of 1947959990 is 999597491.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 94559 + ... + 113301.

It is an arithmetic number, because the mean of its divisors is an integer number (115556760).

Almost surely, 2^1947959990 is an apocalyptic number.

1947959990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1947959990 is a deficient number, since it is larger than the sum of its proper divisors (1749856330).

1947959990 is a wasteful number, since it uses less digits than its factorization.

1947959990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19316.

The product of its (nonzero) digits is 8266860, while the sum is 62.

The square root of 1947959990 is about 44135.6997225602. The cubic root of 1947959990 is about 1248.8971584786.

The spelling of 1947959990 in words is "one billion, nine hundred forty-seven million, nine hundred fifty-nine thousand, nine hundred ninety".