1953746109 has 64 divisors (see below), whose sum is σ = 3462451200. Its totient is φ = 1064581056.

The previous prime is 1953746107. The next prime is 1953746143. The reversal of 1953746109 is 9016473591.

1953746109 is a `hidden beast` number, since 1 + 9 + 537 + 4 + 6 + 109 = 666.

It is not a de Polignac number, because 1953746109 - 2¹ = 1953746107 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1953746101) 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 63 ways as a sum of consecutive naturals, for example, 2212182 + ... + 2213064.

It is an arithmetic number, because the mean of its divisors is an integer number (54100800).

Almost surely, 2^1953746109 is an apocalyptic number.

It is an amenable number.

1953746109 is a deficient number, since it is larger than the sum of its proper divisors (1508705091).

1953746109 is a wasteful number, since it uses less digits than its factorization.

1953746109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1431 (or 1425 counting only the distinct ones).

The product of its (nonzero) digits is 204120, while the sum is 45.

The square root of 1953746109 is about 44201.2003117562. The cubic root of 1953746109 is about 1250.1324892101.

The spelling of 1953746109 in words is "one billion, nine hundred fifty-three million, seven hundred forty-six thousand, one hundred nine".