1948738799 has 4 divisors (see below), whose sum is σ = 2227130064. Its totient is φ = 1670347536.

The previous prime is 1948738787. The next prime is 1948738807. The reversal of 1948738799 is 9978378491.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1948738799 - 2⁴ = 1948738783 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1948738499) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 139195622 + ... + 139195635.

It is an arithmetic number, because the mean of its divisors is an integer number (556782516).

Almost surely, 2^1948738799 is an apocalyptic number.

1948738799 is a deficient number, since it is larger than the sum of its proper divisors (278391265).

1948738799 is an equidigital number, since it uses as much as digits as its factorization.

1948738799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278391264.

The product of its digits is 27433728, while the sum is 65.

The square root of 1948738799 is about 44144.5217326001. The cubic root of 1948738799 is about 1249.0635757829.

The spelling of 1948738799 in words is "one billion, nine hundred forty-eight million, seven hundred thirty-eight thousand, seven hundred ninety-nine".