1070941987 has 4 divisors (see below), whose sum is σ = 1071023800. Its totient is φ = 1070860176.

The previous prime is 1070941943. The next prime is 1070941999. The reversal of 1070941987 is 7891490701.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a 4-Lehmer number, since φ(1070941987) divides (1070941987-1)⁴.

It is a cyclic number.

It is not a de Polignac number, because 1070941987 - 2¹⁵ = 1070909219 is a prime.

It is a super-2 number, since 2×1070941987² = 2293833479039016338, which contains 22 as substring.

It is a deceptive number, since it divides R_1070941986.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1070971987) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16362 + ... + 49087.

It is an arithmetic number, because the mean of its divisors is an integer number (267755950).

It is a Poulet number, since it divides 2^1070941986-1.

Almost surely, 2^1070941987 is an apocalyptic number.

1070941987 is the 16363-rd decagonal number.

1070941987 is a deficient number, since it is larger than the sum of its proper divisors (81813).

1070941987 is an equidigital number, since it uses as much as digits as its factorization.

1070941987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81812.

The product of its (nonzero) digits is 127008, while the sum is 46.

The square root of 1070941987 is about 32725.2499914057. The cubic root of 1070941987 is about 1023.1091810530.

The spelling of 1070941987 in words is "one billion, seventy million, nine hundred forty-one thousand, nine hundred eighty-seven".