1561426060 has 12 divisors (see below), whose sum is σ = 3278994768. Its totient is φ = 624570416.

The previous prime is 1561426049. The next prime is 1561426067. The reversal of 1561426060 is 606241651.

It is not an unprimeable number, because it can be changed into a prime (1561426067) 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, 39035632 + ... + 39035671.

It is an arithmetic number, because the mean of its divisors is an integer number (273249564).

Almost surely, 2^1561426060 is an apocalyptic number.

1561426060 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1561426060 is an abundant number, since it is smaller than the sum of its proper divisors (1717568708).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1561426060 is a wasteful number, since it uses less digits than its factorization.

1561426060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78071312 (or 78071310 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 1561426060 is about 39514.8840312103. The cubic root of 1561426060 is about 1160.1312921152.

The spelling of 1561426060 in words is "one billion, five hundred sixty-one million, four hundred twenty-six thousand, sixty".