1836742947 has 16 divisors (see below), whose sum is σ = 2752044288. Its totient is φ = 1081159200.

The previous prime is 1836742909. The next prime is 1836742991. The reversal of 1836742947 is 7492476381.

It is not a de Polignac number, because 1836742947 - 2¹⁶ = 1836677411 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1836742947.

It is not an unprimeable number, because it can be changed into a prime (1836742997) 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, 1022929 + ... + 1024722.

It is an arithmetic number, because the mean of its divisors is an integer number (172002768).

Almost surely, 2^1836742947 is an apocalyptic number.

1836742947 is a deficient number, since it is larger than the sum of its proper divisors (915301341).

1836742947 is a wasteful number, since it uses less digits than its factorization.

1836742947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2047690.

The product of its digits is 2032128, while the sum is 51.

The square root of 1836742947 is about 42857.2391434633. The cubic root of 1836742947 is about 1224.6616746096.

The spelling of 1836742947 in words is "one billion, eight hundred thirty-six million, seven hundred forty-two thousand, nine hundred forty-seven".