1430161261 has 16 divisors (see below), whose sum is σ = 1548827136. Its totient is φ = 1315420416.

The previous prime is 1430161247. The next prime is 1430161267. The reversal of 1430161261 is 1621610341.

It is a cyclic number.

It is not a de Polignac number, because 1430161261 - 2⁹ = 1430160749 is a prime.

It is a super-2 number, since 2×1430161261² = 4090722464930220242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1430161267) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 987640 + ... + 989086.

It is an arithmetic number, because the mean of its divisors is an integer number (96801696).

Almost surely, 2^1430161261 is an apocalyptic number.

It is an amenable number.

1430161261 is a deficient number, since it is larger than the sum of its proper divisors (118665875).

1430161261 is a wasteful number, since it uses less digits than its factorization.

1430161261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2748.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 1430161261 is about 37817.4729589379. The cubic root of 1430161261 is about 1126.6655194815.

The spelling of 1430161261 in words is "one billion, four hundred thirty million, one hundred sixty-one thousand, two hundred sixty-one".