1941991373 has 12 divisors (see below), whose sum is σ = 2331925632. Its totient is φ = 1610867160.

The previous prime is 1941991343. The next prime is 1941991411. The reversal of 1941991373 is 3731991491.

It is a happy number.

It is not a de Polignac number, because 1941991373 - 2¹⁴ = 1941974989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1941991343) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 637715 + ... + 640752.

It is an arithmetic number, because the mean of its divisors is an integer number (194327136).

Almost surely, 2^1941991373 is an apocalyptic number.

It is an amenable number.

1941991373 is a deficient number, since it is larger than the sum of its proper divisors (389934259).

1941991373 is a wasteful number, since it uses less digits than its factorization.

1941991373 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1278512 (or 1278505 counting only the distinct ones).

The product of its digits is 183708, while the sum is 47.

The square root of 1941991373 is about 44068.0311904219. The cubic root of 1941991373 is about 1247.6202987324.

The spelling of 1941991373 in words is "one billion, nine hundred forty-one million, nine hundred ninety-one thousand, three hundred seventy-three".