91319494370 has 16 divisors (see below), whose sum is σ = 177019327800. Its totient is φ = 33717967104.

The previous prime is 91319494361. The next prime is 91319494397. The reversal of 91319494370 is 7349491319.

It can be written as a sum of positive squares in 4 ways, for example, as 51560330761 + 39759163609 = 227069^2 + 199397^2 .

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, 351228695 + ... + 351228954.

Almost surely, 2^91319494370 is an apocalyptic number.

91319494370 is a deficient number, since it is larger than the sum of its proper divisors (85699833430).

91319494370 is a wasteful number, since it uses less digits than its factorization.

91319494370 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 702457669.

The product of its (nonzero) digits is 734832, while the sum is 50.

It can be divided in two parts, 9131949 and 4370, that added together give a palindrome (9136319).

The spelling of 91319494370 in words is "ninety-one billion, three hundred nineteen million, four hundred ninety-four thousand, three hundred seventy".