1842746649 has 4 divisors (see below), whose sum is σ = 2456995536. Its totient is φ = 1228497764.

The previous prime is 1842746611. The next prime is 1842746651. The reversal of 1842746649 is 9466472481.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9466472481 = 3 ⋅3155490827.

It is a cyclic number.

It is not a de Polignac number, because 1842746649 - 2¹¹ = 1842744601 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1842746669) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 307124439 + ... + 307124444.

It is an arithmetic number, because the mean of its divisors is an integer number (614248884).

Almost surely, 2^1842746649 is an apocalyptic number.

It is an amenable number.

1842746649 is a deficient number, since it is larger than the sum of its proper divisors (614248887).

1842746649 is an equidigital number, since it uses as much as digits as its factorization.

1842746649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 614248886.

The product of its digits is 2322432, while the sum is 51.

The square root of 1842746649 is about 42927.2250326061. The cubic root of 1842746649 is about 1225.9945606856.

The spelling of 1842746649 in words is "one billion, eight hundred forty-two million, seven hundred forty-six thousand, six hundred forty-nine".