1401958783 has 2 divisors, whose sum is σ = 1401958784. Its totient is φ = 1401958782.

The previous prime is 1401958777. The next prime is 1401958793. The reversal of 1401958783 is 3878591041.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1401958783 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1401958793) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 700979391 + 700979392.

It is an arithmetic number, because the mean of its divisors is an integer number (700979392).

Almost surely, 2^1401958783 is an apocalyptic number.

1401958783 is a deficient number, since it is larger than the sum of its proper divisors (1).

1401958783 is an equidigital number, since it uses as much as digits as its factorization.

1401958783 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 241920, while the sum is 46.

The square root of 1401958783 is about 37442.7400573195. The cubic root of 1401958783 is about 1119.2104296334.

The spelling of 1401958783 in words is "one billion, four hundred one million, nine hundred fifty-eight thousand, seven hundred eighty-three".