1438723948 has 24 divisors (see below), whose sum is σ = 2597772240. Its totient is φ = 696756480.

The previous prime is 1438723943. The next prime is 1438723961. The reversal of 1438723948 is 8493278341.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1438723943) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8761 + ... + 54352.

It is an arithmetic number, because the mean of its divisors is an integer number (108240510).

Almost surely, 2^1438723948 is an apocalyptic number.

It is an amenable number.

1438723948 is a deficient number, since it is larger than the sum of its proper divisors (1159048292).

1438723948 is a wasteful number, since it uses less digits than its factorization.

1438723948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63297 (or 63295 counting only the distinct ones).

The product of its digits is 1161216, while the sum is 49.

The square root of 1438723948 is about 37930.5147341820. The cubic root of 1438723948 is about 1128.9095774962.

The spelling of 1438723948 in words is "one billion, four hundred thirty-eight million, seven hundred twenty-three thousand, nine hundred forty-eight".