1953048391 has 8 divisors (see below), whose sum is σ = 2304057344. Its totient is φ = 1620039960.

The previous prime is 1953048379. The next prime is 1953048403. The reversal of 1953048391 is 1938403591.

It is an interprime number because it is at equal distance from previous prime (1953048379) and next prime (1953048403).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1953048391 - 2¹⁷ = 1952917319 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1953048311) 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, 4499895 + ... + 4500328.

It is an arithmetic number, because the mean of its divisors is an integer number (288007168).

Almost surely, 2^1953048391 is an apocalyptic number.

1953048391 is a deficient number, since it is larger than the sum of its proper divisors (351008953).

1953048391 is an equidigital number, since it uses as much as digits as its factorization.

1953048391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9000261.

The product of its (nonzero) digits is 116640, while the sum is 43.

The square root of 1953048391 is about 44193.3070837655. The cubic root of 1953048391 is about 1249.9836565330.

The spelling of 1953048391 in words is "one billion, nine hundred fifty-three million, forty-eight thousand, three hundred ninety-one".