1953640054 has 4 divisors (see below), whose sum is σ = 2930460084. Its totient is φ = 976820026.

The previous prime is 1953640001. The next prime is 1953640063. The reversal of 1953640054 is 4500463591.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4500463591 = 13 ⋅346189507.

It is a junction number, because it is equal to n+sod(n) for n = 1953639995 and 1953640022.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 488410012 + ... + 488410015.

It is an arithmetic number, because the mean of its divisors is an integer number (732615021).

Almost surely, 2^1953640054 is an apocalyptic number.

1953640054 is a deficient number, since it is larger than the sum of its proper divisors (976820030).

1953640054 is an equidigital number, since it uses as much as digits as its factorization.

1953640054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 976820029.

The product of its (nonzero) digits is 64800, while the sum is 37.

The square root of 1953640054 is about 44200.0006108597. Note that the first 3 decimals coincide. The cubic root of 1953640054 is about 1250.1098685295.

The spelling of 1953640054 in words is "one billion, nine hundred fifty-three million, six hundred forty thousand, fifty-four".