1658541538 has 16 divisors (see below), whose sum is σ = 2503581696. Its totient is φ = 824028480.

The previous prime is 1658541529. The next prime is 1658541557. The reversal of 1658541538 is 8351458561.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 261343 + ... + 267613.

It is an arithmetic number, because the mean of its divisors is an integer number (156473856).

Almost surely, 2^1658541538 is an apocalyptic number.

1658541538 is a deficient number, since it is larger than the sum of its proper divisors (845040158).

1658541538 is a wasteful number, since it uses less digits than its factorization.

1658541538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7089.

The product of its digits is 576000, while the sum is 46.

The square root of 1658541538 is about 40725.1953709249. The cubic root of 1658541538 is about 1183.7012810329.

The spelling of 1658541538 in words is "one billion, six hundred fifty-eight million, five hundred forty-one thousand, five hundred thirty-eight".