1378750320 has 120 divisors (see below), whose sum is σ = 4902717456. Its totient is φ = 346036224.

The previous prime is 1378750309. The next prime is 1378750339. The reversal of 1378750320 is 230578731.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

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, 44082 + ... + 68561.

Almost surely, 2^1378750320 is an apocalyptic number.

1378750320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1378750320 is an abundant number, since it is smaller than the sum of its proper divisors (3523967136).

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

1378750320 is a wasteful number, since it uses less digits than its factorization.

1378750320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112679 (or 112670 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 36.

The square root of 1378750320 is about 37131.5273049736. The cubic root of 1378750320 is about 1113.0001138227. Note that the first 3 decimals are identical.

The spelling of 1378750320 in words is "one billion, three hundred seventy-eight million, seven hundred fifty thousand, three hundred twenty".