619142948 has 6 divisors (see below), whose sum is σ = 1083500166. Its totient is φ = 309571472.

The previous prime is 619142947. The next prime is 619142969. The reversal of 619142948 is 849241916.

It can be written as a sum of positive squares in only one way, i.e., 401521444 + 217621504 = 20038^2 + 14752^2 .

It is a junction number, because it is equal to n+sod(n) for n = 619142899 and 619142908.

It is not an unprimeable number, because it can be changed into a prime (619142947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77392865 + ... + 77392872.

It is an arithmetic number, because the mean of its divisors is an integer number (180583361).

Almost surely, 2^619142948 is an apocalyptic number.

It is an amenable number.

619142948 is a deficient number, since it is larger than the sum of its proper divisors (464357218).

619142948 is a wasteful number, since it uses less digits than its factorization.

619142948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154785741 (or 154785739 counting only the distinct ones).

The product of its digits is 124416, while the sum is 44.

The square root of 619142948 is about 24882.5832260238. The cubic root of 619142948 is about 852.3088086135.

The spelling of 619142948 in words is "six hundred nineteen million, one hundred forty-two thousand, nine hundred forty-eight".