1047621849156 has 135 divisors (see below), whose sum is σ = 2770996496653. Its totient is φ = 345135664800.

The previous prime is 1047621849137. The next prime is 1047621849163. The reversal of 1047621849156 is 6519481267401.

The square root of 1047621849156 is 1023534.

It is a perfect power (a square), and thus also a powerful number.

1047621849156 is a `hidden beast` number, since 1 + 0 + 4 + 7 + 621 + 8 + 4 + 9 + 1 + 5 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1006542666756 + 41079182400 = 1003266^2 + 202680^2 .

It is a super-3 number, since 3×1047621849156³ (a number of 37 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 1860784531 + ... + 1860785093.

Almost surely, 2^{1047621849156} is an apocalyptic number.

1047621849156 is the 1023534-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1047621849156

1047621849156 is an abundant number, since it is smaller than the sum of its proper divisors (1723374647497).

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

1047621849156 is an frugal number, since it uses more digits than its factorization.

1047621849156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1344 (or 669 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 54.

The spelling of 1047621849156 in words is "one trillion, forty-seven billion, six hundred twenty-one million, eight hundred forty-nine thousand, one hundred fifty-six".