1461066157 has 4 divisors (see below), whose sum is σ = 1473996060. Its totient is φ = 1448136256.

The previous prime is 1461066121. The next prime is 1461066221. The reversal of 1461066157 is 7516601641.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 520478596 + 940587561 = 22814^2 + 30669^2 .

It is a cyclic number.

It is not a de Polignac number, because 1461066157 - 2¹⁵ = 1461033389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1461061157) 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, 6464782 + ... + 6465007.

It is an arithmetic number, because the mean of its divisors is an integer number (368499015).

Almost surely, 2^1461066157 is an apocalyptic number.

It is an amenable number.

1461066157 is a deficient number, since it is larger than the sum of its proper divisors (12929903).

1461066157 is a wasteful number, since it uses less digits than its factorization.

1461066157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12929902.

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 1461066157 is about 38223.8951050256. The cubic root of 1461066157 is about 1134.7232681311.

Adding to 1461066157 its reverse (7516601641), we get a palindrome (8977667798).

The spelling of 1461066157 in words is "one billion, four hundred sixty-one million, sixty-six thousand, one hundred fifty-seven".