1949740893 has 12 divisors (see below), whose sum is σ = 2817402588. Its totient is φ = 1299314880.

The previous prime is 1949740861. The next prime is 1949740901. The reversal of 1949740893 is 3980479491.

It can be written as a sum of positive squares in 2 ways, for example, as 1153485369 + 796255524 = 33963^2 + 28218^2 .

It is not a de Polignac number, because 1949740893 - 2⁵ = 1949740861 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1949740813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17838 + ... + 64943.

It is an arithmetic number, because the mean of its divisors is an integer number (234783549).

Almost surely, 2^1949740893 is an apocalyptic number.

It is an amenable number.

1949740893 is a deficient number, since it is larger than the sum of its proper divisors (867661695).

1949740893 is a wasteful number, since it uses less digits than its factorization.

1949740893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85404 (or 85401 counting only the distinct ones).

The product of its (nonzero) digits is 1959552, while the sum is 54.

The square root of 1949740893 is about 44155.8704251201. The cubic root of 1949740893 is about 1249.2776398104.

The spelling of 1949740893 in words is "one billion, nine hundred forty-nine million, seven hundred forty thousand, eight hundred ninety-three".