1469640061 has 4 divisors (see below), whose sum is σ = 1469756992. Its totient is φ = 1469523132.

The previous prime is 1469640049. The next prime is 1469640077. The reversal of 1469640061 is 1600469641.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1469640061 - 2⁷ = 1469639933 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1469640061.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1469640091) 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, 36981 + ... + 65626.

It is an arithmetic number, because the mean of its divisors is an integer number (367439248).

Almost surely, 2^1469640061 is an apocalyptic number.

It is an amenable number.

1469640061 is a deficient number, since it is larger than the sum of its proper divisors (116931).

1469640061 is a wasteful number, since it uses less digits than its factorization.

1469640061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116930.

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 1469640061 is about 38335.8847687125. The cubic root of 1469640061 is about 1136.9385544058.

The spelling of 1469640061 in words is "one billion, four hundred sixty-nine million, six hundred forty thousand, sixty-one".