1953689970 has 32 divisors (see below), whose sum is σ = 4690680192. Its totient is φ = 520781312.

The previous prime is 1953689957. The next prime is 1953689971. The reversal of 1953689970 is 799863591.

It is a self number, because there is not a number n which added to its sum of digits gives 1953689970.

It is not an unprimeable number, because it can be changed into a prime (1953689971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 75874 + ... + 98306.

It is an arithmetic number, because the mean of its divisors is an integer number (146583756).

Almost surely, 2^1953689970 is an apocalyptic number.

1953689970 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1953689970 is an abundant number, since it is smaller than the sum of its proper divisors (2736990222).

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

1953689970 is a wasteful number, since it uses less digits than its factorization.

1953689970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25346.

The product of its (nonzero) digits is 3674160, while the sum is 57.

The square root of 1953689970 is about 44200.5652678786. The cubic root of 1953689970 is about 1250.1205153138.

The spelling of 1953689970 in words is "one billion, nine hundred fifty-three million, six hundred eighty-nine thousand, nine hundred seventy".