1942861949 has 16 divisors (see below), whose sum is σ = 2352404736. Its totient is φ = 1566432000.

The previous prime is 1942861937. The next prime is 1942861961. The reversal of 1942861949 is 9491682491.

It is an interprime number because it is at equal distance from previous prime (1942861937) and next prime (1942861961).

It is not a de Polignac number, because 1942861949 - 2⁸ = 1942861693 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1942861949.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1942861909) 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, 260624 + ... + 267974.

It is an arithmetic number, because the mean of its divisors is an integer number (147025296).

Almost surely, 2^1942861949 is an apocalyptic number.

It is an amenable number.

1942861949 is a deficient number, since it is larger than the sum of its proper divisors (409542787).

1942861949 is a wasteful number, since it uses less digits than its factorization.

1942861949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9596.

The product of its digits is 1119744, while the sum is 53.

The square root of 1942861949 is about 44077.9077203081. The cubic root of 1942861949 is about 1247.8067029292.

The spelling of 1942861949 in words is "one billion, nine hundred forty-two million, eight hundred sixty-one thousand, nine hundred forty-nine".