1379785450 has 48 divisors (see below), whose sum is σ = 2729718144. Its totient is φ = 517088000.

The previous prime is 1379785441. The next prime is 1379785489. The reversal of 1379785450 is 545879731.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1379785394 and 1379785403.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 189375 + ... + 196525.

It is an arithmetic number, because the mean of its divisors is an integer number (56869128).

Almost surely, 2^1379785450 is an apocalyptic number.

1379785450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1379785450 is a deficient number, since it is larger than the sum of its proper divisors (1349932694).

1379785450 is a wasteful number, since it uses less digits than its factorization.

1379785450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7407 (or 7402 counting only the distinct ones).

The product of its (nonzero) digits is 1058400, while the sum is 49.

The square root of 1379785450 is about 37145.4633838373. The cubic root of 1379785450 is about 1113.2785813569.

The spelling of 1379785450 in words is "one billion, three hundred seventy-nine million, seven hundred eighty-five thousand, four hundred fifty".