1377643061 has 8 divisors (see below), whose sum is σ = 1381532640. Its totient is φ = 1373760432.

The previous prime is 1377643037. The next prime is 1377643063. The reversal of 1377643061 is 1603467731.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1377643061 - 2⁶ = 1377642997 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 (1377643063) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 947411 + ... + 948863.

It is an arithmetic number, because the mean of its divisors is an integer number (172691580).

Almost surely, 2^1377643061 is an apocalyptic number.

It is an amenable number.

1377643061 is a deficient number, since it is larger than the sum of its proper divisors (3889579).

1377643061 is a wasteful number, since it uses less digits than its factorization.

1377643061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3475.

The product of its (nonzero) digits is 63504, while the sum is 38.

The square root of 1377643061 is about 37116.6143526050. The cubic root of 1377643061 is about 1112.7020880366.

The spelling of 1377643061 in words is "one billion, three hundred seventy-seven million, six hundred forty-three thousand, sixty-one".