1868031401 has 2 divisors, whose sum is σ = 1868031402. Its totient is φ = 1868031400.

The previous prime is 1868031331. The next prime is 1868031479. The reversal of 1868031401 is 1041308681.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1867968400 + 63001 = 43220^2 + 251^2 .

It is a cyclic number.

It is not a de Polignac number, because 1868031401 - 2³⁰ = 794289577 is a prime.

It is not a weakly prime, because it can be changed into another prime (1868031001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 934015700 + 934015701.

It is an arithmetic number, because the mean of its divisors is an integer number (934015701).

Almost surely, 2^1868031401 is an apocalyptic number.

It is an amenable number.

1868031401 is a deficient number, since it is larger than the sum of its proper divisors (1).

1868031401 is an equidigital number, since it uses as much as digits as its factorization.

1868031401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4608, while the sum is 32.

The square root of 1868031401 is about 43220.7288346691. The cubic root of 1868031401 is about 1231.5764924362.

The spelling of 1868031401 in words is "one billion, eight hundred sixty-eight million, thirty-one thousand, four hundred one".