1381110401 has 4 divisors (see below), whose sum is σ = 1506665904. Its totient is φ = 1255554900.

The previous prime is 1381110397. The next prime is 1381110407. The reversal of 1381110401 is 1040111831.

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 1381110401 - 2² = 1381110397 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1381110407) 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, 62777735 + ... + 62777756.

It is an arithmetic number, because the mean of its divisors is an integer number (376666476).

Almost surely, 2^1381110401 is an apocalyptic number.

1381110401 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1381110401 is a deficient number, since it is larger than the sum of its proper divisors (125555503).

1381110401 is a wasteful number, since it uses less digits than its factorization.

1381110401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125555502.

The product of its (nonzero) digits is 96, while the sum is 20.

The square root of 1381110401 is about 37163.2937318532. The cubic root of 1381110401 is about 1113.6348125090.

The spelling of 1381110401 in words is "one billion, three hundred eighty-one million, one hundred ten thousand, four hundred one".