1958737798 has 4 divisors (see below), whose sum is σ = 2938106700. Its totient is φ = 979368898.

The previous prime is 1958737789. The next prime is 1958737811. The reversal of 1958737798 is 8977378591.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8977378591 = 29 ⋅309564779.

It is a super-2 number, since 2×1958737798² = 7673307522627777608, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 489684448 + ... + 489684451.

It is an arithmetic number, because the mean of its divisors is an integer number (734526675).

Almost surely, 2^1958737798 is an apocalyptic number.

1958737798 is a deficient number, since it is larger than the sum of its proper divisors (979368902).

1958737798 is an equidigital number, since it uses as much as digits as its factorization.

1958737798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 979368901.

The product of its digits is 26671680, while the sum is 64.

The square root of 1958737798 is about 44257.6298280873. The cubic root of 1958737798 is about 1251.1962517269.

The spelling of 1958737798 in words is "one billion, nine hundred fifty-eight million, seven hundred thirty-seven thousand, seven hundred ninety-eight".