1481217278 has 4 divisors (see below), whose sum is σ = 2221825920. Its totient is φ = 740608638.

The previous prime is 1481217271. The next prime is 1481217313. The reversal of 1481217278 is 8727121841.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1481217271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 370304318 + ... + 370304321.

It is an arithmetic number, because the mean of its divisors is an integer number (555456480).

Almost surely, 2^1481217278 is an apocalyptic number.

1481217278 is a deficient number, since it is larger than the sum of its proper divisors (740608642).

1481217278 is an equidigital number, since it uses as much as digits as its factorization.

1481217278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 740608641.

The product of its digits is 50176, while the sum is 41.

The square root of 1481217278 is about 38486.5856890424. The cubic root of 1481217278 is about 1139.9161931825.

The spelling of 1481217278 in words is "one billion, four hundred eighty-one million, two hundred seventeen thousand, two hundred seventy-eight".