1930725478 has 32 divisors (see below), whose sum is σ = 3300694272. Its totient is φ = 838437600.

The previous prime is 1930725463. The next prime is 1930725481. The reversal of 1930725478 is 8745270391.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 551313 + ... + 554803.

It is an arithmetic number, because the mean of its divisors is an integer number (103146696).

Almost surely, 2^1930725478 is an apocalyptic number.

1930725478 is a deficient number, since it is larger than the sum of its proper divisors (1369968794).

1930725478 is a wasteful number, since it uses less digits than its factorization.

1930725478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4620.

The product of its (nonzero) digits is 423360, while the sum is 46.

The square root of 1930725478 is about 43940.0213700449. The cubic root of 1930725478 is about 1245.2030502733.

The spelling of 1930725478 in words is "one billion, nine hundred thirty million, seven hundred twenty-five thousand, four hundred seventy-eight".