648933142 has 16 divisors (see below), whose sum is σ = 1143574992. Its totient is φ = 272279520.

The previous prime is 648933133. The next prime is 648933143. The reversal of 648933142 is 241339846.

It is a happy number.

It is a super-2 number, since 2×648933142² = 842228445571984328, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 648933095 and 648933104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (648933143) 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, 1134213 + ... + 1134784.

It is an arithmetic number, because the mean of its divisors is an integer number (71473437).

Almost surely, 2^648933142 is an apocalyptic number.

648933142 is a deficient number, since it is larger than the sum of its proper divisors (494641850).

648933142 is a wasteful number, since it uses less digits than its factorization.

648933142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2269023.

The product of its digits is 124416, while the sum is 40.

The square root of 648933142 is about 25474.1661688857. The cubic root of 648933142 is about 865.7649206271.

The spelling of 648933142 in words is "six hundred forty-eight million, nine hundred thirty-three thousand, one hundred forty-two".