1893994001 has 2 divisors, whose sum is σ = 1893994002. Its totient is φ = 1893994000.

The previous prime is 1893993923. The next prime is 1893994013. The reversal of 1893994001 is 1004993981.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1866326401 + 27667600 = 43201^2 + 5260^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1893994001 is a prime.

It is not a weakly prime, because it can be changed into another prime (1893994301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 946997000 + 946997001.

It is an arithmetic number, because the mean of its divisors is an integer number (946997001).

Almost surely, 2^1893994001 is an apocalyptic number.

It is an amenable number.

1893994001 is a deficient number, since it is larger than the sum of its proper divisors (1).

1893994001 is an equidigital number, since it uses as much as digits as its factorization.

1893994001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 69984, while the sum is 44.

The square root of 1893994001 is about 43520.0413717634. The cubic root of 1893994001 is about 1237.2558987431.

The spelling of 1893994001 in words is "one billion, eight hundred ninety-three million, nine hundred ninety-four thousand, one".