3646156542 has 64 divisors (see below), whose sum is σ = 8519347200. Its totient is φ = 1039899168.

The previous prime is 3646156541. The next prime is 3646156559. The reversal of 3646156542 is 2456516463.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 3646156494 and 3646156503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3646156541) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1494948 + ... + 1497384.

It is an arithmetic number, because the mean of its divisors is an integer number (133114800).

Almost surely, 2^3646156542 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3646156542, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4259673600).

3646156542 is an abundant number, since it is smaller than the sum of its proper divisors (4873190658).

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

3646156542 is a wasteful number, since it uses less digits than its factorization.

3646156542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3190 (or 3176 counting only the distinct ones).

The product of its digits is 518400, while the sum is 42.

The square root of 3646156542 is about 60383.4128051736. The cubic root of 3646156542 is about 1539.1411050848.

The spelling of 3646156542 in words is "three billion, six hundred forty-six million, one hundred fifty-six thousand, five hundred forty-two".