1261020348 has 144 divisors (see below), whose sum is σ = 3873425920. Its totient is φ = 337882752.

The previous prime is 1261020337. The next prime is 1261020353. The reversal of 1261020348 is 8430201621.

1261020348 is a `hidden beast` number, since 1 + 2 + 610 + 2 + 0 + 3 + 48 = 666.

It is a super-2 number, since 2×1261020348² = 3180344636140082208, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 491886 + ... + 494442.

Almost surely, 2^1261020348 is an apocalyptic number.

1261020348 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1261020348, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1936712960).

1261020348 is an abundant number, since it is smaller than the sum of its proper divisors (2612405572).

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

1261020348 is a wasteful number, since it uses less digits than its factorization.

1261020348 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2696 (or 2691 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 1261020348 is about 35510.8483142828. The cubic root of 1261020348 is about 1080.3737698066.

Adding to 1261020348 its reverse (8430201621), we get a palindrome (9691221969).

The spelling of 1261020348 in words is "one billion, two hundred sixty-one million, twenty thousand, three hundred forty-eight".