1369878901 has 4 divisors (see below), whose sum is σ = 1371198400. Its totient is φ = 1368559404.

The previous prime is 1369878893. The next prime is 1369878941. The reversal of 1369878901 is 1098789631.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1369878901 - 2³ = 1369878893 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1369878941) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 658191 + ... + 660268.

It is an arithmetic number, because the mean of its divisors is an integer number (342799600).

Almost surely, 2^1369878901 is an apocalyptic number.

It is an amenable number.

1369878901 is a deficient number, since it is larger than the sum of its proper divisors (1319499).

1369878901 is a wasteful number, since it uses less digits than its factorization.

1369878901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1319498.

The product of its (nonzero) digits is 653184, while the sum is 52.

The square root of 1369878901 is about 37011.8751348807. The cubic root of 1369878901 is about 1110.6078160699.

The spelling of 1369878901 in words is "one billion, three hundred sixty-nine million, eight hundred seventy-eight thousand, nine hundred one".