1948774277 has 16 divisors (see below), whose sum is σ = 2139618240. Its totient is φ = 1766698752.

The previous prime is 1948774249. The next prime is 1948774313. The reversal of 1948774277 is 7724778491.

It is not a de Polignac number, because 1948774277 - 2¹⁸ = 1948512133 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 (1948777277) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 213938 + ... + 222860.

It is an arithmetic number, because the mean of its divisors is an integer number (133726140).

Almost surely, 2^1948774277 is an apocalyptic number.

1948774277 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

1948774277 is a deficient number, since it is larger than the sum of its proper divisors (190843963).

1948774277 is a wasteful number, since it uses less digits than its factorization.

1948774277 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9412.

The product of its digits is 5531904, while the sum is 56.

The square root of 1948774277 is about 44144.9235699871. The cubic root of 1948774277 is about 1249.0711557296.

The spelling of 1948774277 in words is "one billion, nine hundred forty-eight million, seven hundred seventy-four thousand, two hundred seventy-seven".