1949740947 has 24 divisors (see below), whose sum is σ = 3511223040. Its totient is φ = 1012852080.

The previous prime is 1949740927. The next prime is 1949740951. The reversal of 1949740947 is 7490479491.

1949740947 is a `hidden beast` number, since 194 + 9 + 7 + 409 + 47 = 666.

It is not a de Polignac number, because 1949740947 - 2²⁷ = 1815523219 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1949740893 and 1949740902.

It is not an unprimeable number, because it can be changed into a prime (1949740927) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1406047 + ... + 1407432.

It is an arithmetic number, because the mean of its divisors is an integer number (146300960).

Almost surely, 2^1949740947 is an apocalyptic number.

1949740947 is a deficient number, since it is larger than the sum of its proper divisors (1561482093).

1949740947 is a wasteful number, since it uses less digits than its factorization.

1949740947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2813503 (or 2813500 counting only the distinct ones).

The product of its (nonzero) digits is 2286144, while the sum is 54.

The square root of 1949740947 is about 44155.8710365904. The cubic root of 1949740947 is about 1249.2776513437.

The spelling of 1949740947 in words is "one billion, nine hundred forty-nine million, seven hundred forty thousand, nine hundred forty-seven".