1401768253 has 2 divisors, whose sum is σ = 1401768254. Its totient is φ = 1401768252.

The previous prime is 1401768241. The next prime is 1401768259. The reversal of 1401768253 is 3528671041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 769396644 + 632371609 = 27738^2 + 25147^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1401768253 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1401768259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 700884126 + 700884127.

It is an arithmetic number, because the mean of its divisors is an integer number (700884127).

Almost surely, 2^1401768253 is an apocalyptic number.

It is an amenable number.

1401768253 is a deficient number, since it is larger than the sum of its proper divisors (1).

1401768253 is an equidigital number, since it uses as much as digits as its factorization.

1401768253 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40320, while the sum is 37.

The square root of 1401768253 is about 37440.1956859202. The cubic root of 1401768253 is about 1119.1597260924.

The spelling of 1401768253 in words is "one billion, four hundred one million, seven hundred sixty-eight thousand, two hundred fifty-three".