1948746865 has 8 divisors (see below), whose sum is σ = 2518380648. Its totient is φ = 1439074560.

The previous prime is 1948746859. The next prime is 1948746871. The reversal of 1948746865 is 5686478491.

It is an interprime number because it is at equal distance from previous prime (1948746859) and next prime (1948746871).

It can be written as a sum of positive squares in 4 ways, for example, as 8520561 + 1940226304 = 2919^2 + 44048^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1948746865 - 2⁹ = 1948746353 is a prime.

It is a super-2 number, since 2×1948746865² = 7595228687694656450, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14990296 + ... + 14990425.

It is an arithmetic number, because the mean of its divisors is an integer number (314797581).

Almost surely, 2^1948746865 is an apocalyptic number.

It is an amenable number.

1948746865 is a deficient number, since it is larger than the sum of its proper divisors (569633783).

1948746865 is a wasteful number, since it uses less digits than its factorization.

1948746865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29980739.

The product of its digits is 11612160, while the sum is 58.

The square root of 1948746865 is about 44144.6130915200. The cubic root of 1948746865 is about 1249.0652991083.

The spelling of 1948746865 in words is "one billion, nine hundred forty-eight million, seven hundred forty-six thousand, eight hundred sixty-five".