1953440766 has 16 divisors (see below), whose sum is σ = 4340979600. Its totient is φ = 651146904.

The previous prime is 1953440747. The next prime is 1953440767. The reversal of 1953440766 is 6670443591.

1953440766 is a `hidden beast` number, since 1 + 9 + 534 + 40 + 76 + 6 = 666.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1953440767) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18087361 + ... + 18087468.

It is an arithmetic number, because the mean of its divisors is an integer number (271311225).

Almost surely, 2^1953440766 is an apocalyptic number.

1953440766 is an abundant number, since it is smaller than the sum of its proper divisors (2387538834).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1953440766 is a wasteful number, since it uses less digits than its factorization.

1953440766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36174840 (or 36174834 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 45.

The square root of 1953440766 is about 44197.7461642559. The cubic root of 1953440766 is about 1250.0673597834.

The spelling of 1953440766 in words is "one billion, nine hundred fifty-three million, four hundred forty thousand, seven hundred sixty-six".