919601642 has 4 divisors (see below), whose sum is σ = 1379402466. Its totient is φ = 459800820.

The previous prime is 919601609. The next prime is 919601651. The reversal of 919601642 is 246106919.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 916212361 + 3389281 = 30269^2 + 1841^2 .

It is a super-3 number, since 3×919601642³ (a number of 28 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 919601596 and 919601605.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 229900409 + ... + 229900412.

Almost surely, 2^919601642 is an apocalyptic number.

919601642 is a deficient number, since it is larger than the sum of its proper divisors (459800824).

919601642 is a wasteful number, since it uses less digits than its factorization.

919601642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 459800823.

The product of its (nonzero) digits is 23328, while the sum is 38.

The square root of 919601642 is about 30324.9343280410. The cubic root of 919601642 is about 972.4484296706.

The spelling of 919601642 in words is "nine hundred nineteen million, six hundred one thousand, six hundred forty-two".