619949916 has 24 divisors (see below), whose sum is σ = 1607277840. Its totient is φ = 206649936.

The previous prime is 619949899. The next prime is 619949927.

619949916 is a `hidden beast` number, since 61 + 99 + 499 + 1 + 6 = 666.

619949916 is nontrivially palindromic in base 10.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2870031 + ... + 2870246.

It is an arithmetic number, because the mean of its divisors is an integer number (66969910).

Almost surely, 2^619949916 is an apocalyptic number.

It is an amenable number.

619949916 is an abundant number, since it is smaller than the sum of its proper divisors (987327924).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

619949916 is a wasteful number, since it uses less digits than its factorization.

619949916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5740290 (or 5740282 counting only the distinct ones).

The product of its digits is 944784, while the sum is 54.

The square root of 619949916 is about 24898.7934647444. The cubic root of 619949916 is about 852.6789371067.

The spelling of 619949916 in words is "six hundred nineteen million, nine hundred forty-nine thousand, nine hundred sixteen".