1977248274 has 32 divisors (see below), whose sum is σ = 4284498240. Its totient is φ = 605885952.

The previous prime is 1977248237. The next prime is 1977248309. The reversal of 1977248274 is 4728427791.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 221019 + ... + 229790.

It is an arithmetic number, because the mean of its divisors is an integer number (133890570).

Almost surely, 2^1977248274 is an apocalyptic number.

1977248274 is an abundant number, since it is smaller than the sum of its proper divisors (2307249966).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1977248274 is a wasteful number, since it uses less digits than its factorization.

1977248274 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 450874.

The product of its digits is 1580544, while the sum is 51.

The square root of 1977248274 is about 44466.2599506637. The cubic root of 1977248274 is about 1255.1252551398.

The spelling of 1977248274 in words is "one billion, nine hundred seventy-seven million, two hundred forty-eight thousand, two hundred seventy-four".