1481948777 has 4 divisors (see below), whose sum is σ = 1482172800. Its totient is φ = 1481724756.

The previous prime is 1481948771. The next prime is 1481948779. The reversal of 1481948777 is 7778491841.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1481948777 - 2⁴ = 1481948761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1481948771) 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, 101777 + ... + 115422.

It is an arithmetic number, because the mean of its divisors is an integer number (370543200).

Almost surely, 2^1481948777 is an apocalyptic number.

It is an amenable number.

1481948777 is a deficient number, since it is larger than the sum of its proper divisors (224023).

1481948777 is an equidigital number, since it uses as much as digits as its factorization.

1481948777 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224022.

The product of its digits is 3161088, while the sum is 56.

The square root of 1481948777 is about 38496.0878142182. The cubic root of 1481948777 is about 1140.1038114656.

The spelling of 1481948777 in words is "one billion, four hundred eighty-one million, nine hundred forty-eight thousand, seven hundred seventy-seven".