189860262049 has 8 divisors (see below), whose sum is σ = 199859660000. Its totient is φ = 179861539392.

The previous prime is 189860262043. The next prime is 189860262061. The reversal of 189860262049 is 940262068981.

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

It is a cyclic number.

It is not a de Polignac number, because 189860262049 - 2³ = 189860262041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (189860262041) 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, 470377 + ... + 775225.

It is an arithmetic number, because the mean of its divisors is an integer number (24982457500).

Almost surely, 2^189860262049 is an apocalyptic number.

189860262049 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

189860262049 is a deficient number, since it is larger than the sum of its proper divisors (9999397951).

189860262049 is a wasteful number, since it uses less digits than its factorization.

189860262049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 337647.

The product of its (nonzero) digits is 2985984, while the sum is 55.

The spelling of 189860262049 in words is "one hundred eighty-nine billion, eight hundred sixty million, two hundred sixty-two thousand, forty-nine".