1401533893 has 2 divisors, whose sum is σ = 1401533894. Its totient is φ = 1401533892.

The previous prime is 1401533867. The next prime is 1401533909. The reversal of 1401533893 is 3983351041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 830419489 + 571114404 = 28817^2 + 23898^2 .

It is a cyclic number.

It is not a de Polignac number, because 1401533893 - 2²¹ = 1399436741 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1401533863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 700766946 + 700766947.

It is an arithmetic number, because the mean of its divisors is an integer number (700766947).

Almost surely, 2^1401533893 is an apocalyptic number.

It is an amenable number.

1401533893 is a deficient number, since it is larger than the sum of its proper divisors (1).

1401533893 is an equidigital number, since it uses as much as digits as its factorization.

1401533893 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 38880, while the sum is 37.

The square root of 1401533893 is about 37437.0657637588. The cubic root of 1401533893 is about 1119.0973522796.

The spelling of 1401533893 in words is "one billion, four hundred one million, five hundred thirty-three thousand, eight hundred ninety-three".