1081753642 has 4 divisors (see below), whose sum is σ = 1622630466. Its totient is φ = 540876820.

The previous prime is 1081753627. The next prime is 1081753661. The reversal of 1081753642 is 2463571801.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2463571801 = 23623 ⋅104287.

It can be written as a sum of positive squares in only one way, i.e., 554178681 + 527574961 = 23541^2 + 22969^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 270438409 + ... + 270438412.

Almost surely, 2^1081753642 is an apocalyptic number.

1081753642 is a deficient number, since it is larger than the sum of its proper divisors (540876824).

1081753642 is an equidigital number, since it uses as much as digits as its factorization.

1081753642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 540876823.

The product of its (nonzero) digits is 40320, while the sum is 37.

The square root of 1081753642 is about 32890.0234417673. The cubic root of 1081753642 is about 1026.5405798709.

The spelling of 1081753642 in words is "one billion, eighty-one million, seven hundred fifty-three thousand, six hundred forty-two".