1061254691 has 8 divisors (see below), whose sum is σ = 1237615200. Its totient is φ = 909646584.

The previous prime is 1061254687. The next prime is 1061254693. The reversal of 1061254691 is 1964521601.

It is not a de Polignac number, because 1061254691 - 2² = 1061254687 is a prime.

It is a super-2 number, since 2×1061254691² = 2252523038339010962, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1061254693) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1546676 + ... + 1547361.

It is an arithmetic number, because the mean of its divisors is an integer number (154701900).

Almost surely, 2^1061254691 is an apocalyptic number.

1061254691 is a deficient number, since it is larger than the sum of its proper divisors (176360509).

1061254691 is an frugal number, since it uses more digits than its factorization.

1061254691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3094058 (or 3094044 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 35.

The square root of 1061254691 is about 32576.9042574644. The cubic root of 1061254691 is about 1020.0149590911.

The spelling of 1061254691 in words is "one billion, sixty-one million, two hundred fifty-four thousand, six hundred ninety-one".