1381777004 has 12 divisors (see below), whose sum is σ = 2419206384. Its totient is φ = 690575184.

The previous prime is 1381776989. The next prime is 1381777009. The reversal of 1381777004 is 4007771831.

It is not an unprimeable number, because it can be changed into a prime (1381777009) 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, 68264 + ... + 86159.

It is an arithmetic number, because the mean of its divisors is an integer number (201600532).

Almost surely, 2^1381777004 is an apocalyptic number.

It is an amenable number.

1381777004 is a deficient number, since it is larger than the sum of its proper divisors (1037429380).

1381777004 is a wasteful number, since it uses less digits than its factorization.

1381777004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156664 (or 156662 counting only the distinct ones).

The product of its (nonzero) digits is 32928, while the sum is 38.

The square root of 1381777004 is about 37172.2612172033. The cubic root of 1381777004 is about 1113.8139516771.

The spelling of 1381777004 in words is "one billion, three hundred eighty-one million, seven hundred seventy-seven thousand, four".