978153783 has 8 divisors (see below), whose sum is σ = 1305222000. Its totient is φ = 651594048.

The previous prime is 978153767. The next prime is 978153797. The reversal of 978153783 is 387351879.

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

It is not a de Polignac number, because 978153783 - 2⁴ = 978153767 is a prime.

It is a super-2 number, since 2×978153783² = 1913569646394422178, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (978153713) 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 7 ways as a sum of consecutive naturals, for example, 122608 + ... + 130341.

It is an arithmetic number, because the mean of its divisors is an integer number (163152750).

Almost surely, 2^978153783 is an apocalyptic number.

978153783 is a deficient number, since it is larger than the sum of its proper divisors (327068217).

978153783 is a wasteful number, since it uses less digits than its factorization.

978153783 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254241.

The product of its digits is 1270080, while the sum is 51.

The square root of 978153783 is about 31275.4501646259. The cubic root of 978153783 is about 992.6642459664.

The spelling of 978153783 in words is "nine hundred seventy-eight million, one hundred fifty-three thousand, seven hundred eighty-three".