1381413774 has 24 divisors (see below), whose sum is σ = 2991703032. Its totient is φ = 425050080.

The previous prime is 1381413757. The next prime is 1381413797. The reversal of 1381413774 is 4773141831.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 680157 + ... + 682184.

It is an arithmetic number, because the mean of its divisors is an integer number (124654293).

Almost surely, 2^1381413774 is an apocalyptic number.

1381413774 is an abundant number, since it is smaller than the sum of its proper divisors (1610289258).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1381413774 is a wasteful number, since it uses less digits than its factorization.

1381413774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1362372 (or 1362359 counting only the distinct ones).

The product of its digits is 56448, while the sum is 39.

The square root of 1381413774 is about 37167.3751292716. The cubic root of 1381413774 is about 1113.7163464206.

The spelling of 1381413774 in words is "one billion, three hundred eighty-one million, four hundred thirteen thousand, seven hundred seventy-four".