1610987947009 has 15 divisors (see below), whose sum is σ = 1879446667713. Its totient is φ = 1380793503348.

The previous prime is 1610987946949. The next prime is 1610987947027. The reversal of 1610987947009 is 9007497890161.

The square root of 1610987947009 is 1269247.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 1610987947009 - 2⁷ = 1610987946881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1610987947039) by changing a digit.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 62180152 + ... + 62206054.

Almost surely, 2^{1610987947009} is an apocalyptic number.

1610987947009 is the 1269247-th square number.

1610987947009 is the 634624-th centered octagonal number.

It is an amenable number.

1610987947009 is a deficient number, since it is larger than the sum of its proper divisors (268458720704).

1610987947009 is an frugal number, since it uses more digits than its factorization.

1610987947009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51834 (or 25910 counting only the distinct ones).

The product of its (nonzero) digits is 6858432, while the sum is 61.

The spelling of 1610987947009 in words is "one trillion, six hundred ten billion, nine hundred eighty-seven million, nine hundred forty-seven thousand, nine".