1401972673 has 2 divisors, whose sum is σ = 1401972674. Its totient is φ = 1401972672.

The previous prime is 1401972667. The next prime is 1401972683. The reversal of 1401972673 is 3762791041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 941998864 + 459973809 = 30692^2 + 21447^2 .

It is a cyclic number.

It is not a de Polignac number, because 1401972673 - 2⁵ = 1401972641 is a prime.

It is not a weakly prime, because it can be changed into another prime (1401972623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 700986336 + 700986337.

It is an arithmetic number, because the mean of its divisors is an integer number (700986337).

Almost surely, 2^1401972673 is an apocalyptic number.

It is an amenable number.

1401972673 is a deficient number, since it is larger than the sum of its proper divisors (1).

1401972673 is an equidigital number, since it uses as much as digits as its factorization.

1401972673 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 63504, while the sum is 40.

The square root of 1401972673 is about 37442.9255400803. The cubic root of 1401972673 is about 1119.2141258385.

The spelling of 1401972673 in words is "one billion, four hundred one million, nine hundred seventy-two thousand, six hundred seventy-three".