1363961869 has 2 divisors, whose sum is σ = 1363961870. Its totient is φ = 1363961868.

The previous prime is 1363961831. The next prime is 1363961887. The reversal of 1363961869 is 9681693631.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1292762025 + 71199844 = 35955^2 + 8438^2 .

It is a cyclic number.

It is not a de Polignac number, because 1363961869 - 2¹⁵ = 1363929101 is a prime.

It is a super-2 number, since 2×1363961869² = 3720783960171946322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1363961899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 681980934 + 681980935.

It is an arithmetic number, because the mean of its divisors is an integer number (681980935).

Almost surely, 2^1363961869 is an apocalyptic number.

It is an amenable number.

1363961869 is a deficient number, since it is larger than the sum of its proper divisors (1).

1363961869 is an equidigital number, since it uses as much as digits as its factorization.

1363961869 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1259712, while the sum is 52.

The square root of 1363961869 is about 36931.8543942760. The cubic root of 1363961869 is about 1109.0064612921.

The spelling of 1363961869 in words is "one billion, three hundred sixty-three million, nine hundred sixty-one thousand, eight hundred sixty-nine".