1378192901450 has 48 divisors (see below), whose sum is σ = 2612810744856. Its totient is φ = 540667545600.

The previous prime is 1378192901447. The next prime is 1378192901467. The reversal of 1378192901450 is 541092918731.

It can be written as a sum of positive squares in 12 ways, for example, as 1956558289 + 1376236343161 = 44233^2 + 1173131^2 .

It is a Harshad number since it is a multiple of its sum of digits (50).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6878690 + ... + 7076210.

Almost surely, 2^{1378192901450} is an apocalyptic number.

1378192901450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1378192901450 is a deficient number, since it is larger than the sum of its proper divisors (1234617843406).

1378192901450 is a wasteful number, since it uses less digits than its factorization.

1378192901450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200219 (or 200214 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 50.

The spelling of 1378192901450 in words is "one trillion, three hundred seventy-eight billion, one hundred ninety-two million, nine hundred one thousand, four hundred fifty".