1641031394 has 16 divisors (see below), whose sum is σ = 2525302656. Its totient is φ = 799515600.

The previous prime is 1641031339. The next prime is 1641031409. The reversal of 1641031394 is 4931301461.

It is a self number, because there is not a number n which added to its sum of digits gives 1641031394.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49802 + ... + 75909.

It is an arithmetic number, because the mean of its divisors is an integer number (157831416).

Almost surely, 2^1641031394 is an apocalyptic number.

1641031394 is a deficient number, since it is larger than the sum of its proper divisors (884271262).

1641031394 is a wasteful number, since it uses less digits than its factorization.

1641031394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125881.

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 1641031394 is about 40509.6456908722. The cubic root of 1641031394 is about 1179.5208707868.

The spelling of 1641031394 in words is "one billion, six hundred forty-one million, thirty-one thousand, three hundred ninety-four".