1931923401 has 16 divisors (see below), whose sum is σ = 2870971200. Its totient is φ = 1148387328.

The previous prime is 1931923381. The next prime is 1931923429. The reversal of 1931923401 is 1043291391.

It is a happy number.

It is not a de Polignac number, because 1931923401 - 2¹⁵ = 1931890633 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1931903401) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 995896 + ... + 997833.

It is an arithmetic number, because the mean of its divisors is an integer number (179435700).

Almost surely, 2^1931923401 is an apocalyptic number.

It is an amenable number.

1931923401 is a deficient number, since it is larger than the sum of its proper divisors (939047799).

1931923401 is a wasteful number, since it uses less digits than its factorization.

1931923401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1993768.

The product of its (nonzero) digits is 5832, while the sum is 33.

The square root of 1931923401 is about 43953.6505992392. The cubic root of 1931923401 is about 1245.4605267152.

The spelling of 1931923401 in words is "one billion, nine hundred thirty-one million, nine hundred twenty-three thousand, four hundred one".