1974027649 has 16 divisors (see below), whose sum is σ = 2191449024. Its totient is φ = 1763006400.

The previous prime is 1974027613. The next prime is 1974027659. The reversal of 1974027649 is 9467204791.

It is a cyclic number.

It is not a de Polignac number, because 1974027649 - 2⁹ = 1974027137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1974027659) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 859747 + ... + 862039.

It is an arithmetic number, because the mean of its divisors is an integer number (136965564).

Almost surely, 2^1974027649 is an apocalyptic number.

It is an amenable number.

1974027649 is a deficient number, since it is larger than the sum of its proper divisors (217421375).

1974027649 is a wasteful number, since it uses less digits than its factorization.

1974027649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3648.

The product of its (nonzero) digits is 762048, while the sum is 49.

The square root of 1974027649 is about 44430.0309362935. The cubic root of 1974027649 is about 1254.4434179007.

The spelling of 1974027649 in words is "one billion, nine hundred seventy-four million, twenty-seven thousand, six hundred forty-nine".