1091513146 has 4 divisors (see below), whose sum is σ = 1637269722. Its totient is φ = 545756572.

The previous prime is 1091513119. The next prime is 1091513153. The reversal of 1091513146 is 6413151901.

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., 691953025 + 399560121 = 26305^2 + 19989^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 272878285 + ... + 272878288.

Almost surely, 2^1091513146 is an apocalyptic number.

1091513146 is a deficient number, since it is larger than the sum of its proper divisors (545756576).

1091513146 is an equidigital number, since it uses as much as digits as its factorization.

1091513146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 545756575.

The product of its (nonzero) digits is 3240, while the sum is 31.

The square root of 1091513146 is about 33038.0560263463. The cubic root of 1091513146 is about 1029.6184674186.

The spelling of 1091513146 in words is "one billion, ninety-one million, five hundred thirteen thousand, one hundred forty-six".