1901101057 has 2 divisors, whose sum is σ = 1901101058. Its totient is φ = 1901101056.

The previous prime is 1901101021. The next prime is 1901101141. The reversal of 1901101057 is 7501011091.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1592887921 + 308213136 = 39911^2 + 17556^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1901101057 is a prime.

It is a super-2 number, since 2×1901101057² = 7228370457853034498, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1901101457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 950550528 + 950550529.

It is an arithmetic number, because the mean of its divisors is an integer number (950550529).

Almost surely, 2^1901101057 is an apocalyptic number.

It is an amenable number.

1901101057 is a deficient number, since it is larger than the sum of its proper divisors (1).

1901101057 is an equidigital number, since it uses as much as digits as its factorization.

1901101057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 315, while the sum is 25.

The square root of 1901101057 is about 43601.6175961397. The cubic root of 1901101057 is about 1238.8015339072.

The spelling of 1901101057 in words is "one billion, nine hundred one million, one hundred one thousand, fifty-seven".