1394253533 has 2 divisors, whose sum is σ = 1394253534. Its totient is φ = 1394253532.

The previous prime is 1394253493. The next prime is 1394253557. The reversal of 1394253533 is 3353524931.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 897721444 + 496532089 = 29962^2 + 22283^2 .

It is a cyclic number.

It is not a de Polignac number, because 1394253533 - 2¹⁶ = 1394187997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1394252533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 697126766 + 697126767.

It is an arithmetic number, because the mean of its divisors is an integer number (697126767).

Almost surely, 2^1394253533 is an apocalyptic number.

It is an amenable number.

1394253533 is a deficient number, since it is larger than the sum of its proper divisors (1).

1394253533 is an equidigital number, since it uses as much as digits as its factorization.

1394253533 is an evil number, because the sum of its binary digits is even.

The product of its digits is 145800, while the sum is 38.

The square root of 1394253533 is about 37339.7045114179. The cubic root of 1394253533 is about 1117.1562457175.

The spelling of 1394253533 in words is "one billion, three hundred ninety-four million, two hundred fifty-three thousand, five hundred thirty-three".