1974849577 has 2 divisors, whose sum is σ = 1974849578. Its totient is φ = 1974849576.

The previous prime is 1974849521. The next prime is 1974849599. The reversal of 1974849577 is 7759484791.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1238758416 + 736091161 = 35196^2 + 27131^2 .

It is a cyclic number.

It is not a de Polignac number, because 1974849577 - 2⁷ = 1974849449 is a prime.

It is not a weakly prime, because it can be changed into another prime (1974849077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 987424788 + 987424789.

It is an arithmetic number, because the mean of its divisors is an integer number (987424789).

Almost surely, 2^1974849577 is an apocalyptic number.

It is an amenable number.

1974849577 is a deficient number, since it is larger than the sum of its proper divisors (1).

1974849577 is an equidigital number, since it uses as much as digits as its factorization.

1974849577 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17781120, while the sum is 61.

The square root of 1974849577 is about 44439.2796633789. The cubic root of 1974849577 is about 1254.6174983907.

The spelling of 1974849577 in words is "one billion, nine hundred seventy-four million, eight hundred forty-nine thousand, five hundred seventy-seven".