1931990334 has 16 divisors (see below), whose sum is σ = 3866522880. Its totient is φ = 643573080.

The previous prime is 1931990327. The next prime is 1931990383. The reversal of 1931990334 is 4330991391.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 95974 + ... + 114345.

It is an arithmetic number, because the mean of its divisors is an integer number (241657680).

Almost surely, 2^1931990334 is an apocalyptic number.

1931990334 is an abundant number, since it is smaller than the sum of its proper divisors (1934532546).

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

1931990334 is a wasteful number, since it uses less digits than its factorization.

1931990334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211855.

The product of its (nonzero) digits is 78732, while the sum is 42.

The square root of 1931990334 is about 43954.4119969770. The cubic root of 1931990334 is about 1245.4749098678.

The spelling of 1931990334 in words is "one billion, nine hundred thirty-one million, nine hundred ninety thousand, three hundred thirty-four".