1971140474 has 4 divisors (see below), whose sum is σ = 2956710714. Its totient is φ = 985570236.

The previous prime is 1971140447. The next prime is 1971140489. The reversal of 1971140474 is 4740411791.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 1101775249 + 869365225 = 33193^2 + 29485^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 492785117 + ... + 492785120.

Almost surely, 2^1971140474 is an apocalyptic number.

1971140474 is a deficient number, since it is larger than the sum of its proper divisors (985570240).

1971140474 is an equidigital number, since it uses as much as digits as its factorization.

1971140474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 985570239.

The product of its (nonzero) digits is 28224, while the sum is 38.

The square root of 1971140474 is about 44397.5277915336. The cubic root of 1971140474 is about 1253.8315445332.

The spelling of 1971140474 in words is "one billion, nine hundred seventy-one million, one hundred forty thousand, four hundred seventy-four".